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Packagehl7.fhir.uv.xver-r4b.r3
Resource TypeStructureDefinition
IdStructureDefinition-ext-R4B-SubstanceDefinition.structure.json
FHIR VersionR3
Sourcehttp://hl7.org/fhir/uv/xver-r4b.r3/0.1.0/StructureDefinition-ext-R4B-SubstanceDefinition.structure.html
URLhttp://hl7.org/fhir/4.3/StructureDefinition/extension-SubstanceDefinition.structure
Version0.1.0
Statusactive
Date2026-03-17T21:02:03.8104715+00:00
NameExtensionSubstanceDefinition_Structure
TitleR4B: Structural information (new)
Realmuv
Authorityhl7
DescriptionR4B: `SubstanceDefinition.structure` (new:BackboneElement)
PurposeThis extension is part of the cross-version definitions generated to enable use of the element `SubstanceDefinition.structure` as defined in FHIR R4B in FHIR STU3. The source element is defined as: `SubstanceDefinition.structure` 0..1 `BackboneElement` Across FHIR versions, the element set has been mapped as: * R4B: `SubstanceDefinition.structure` 0..1 `BackboneElement` Following are the generation technical comments: Element `SubstanceDefinition.structure` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped. Element `SubstanceDefinition.structure` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).
TypeExtension
Kindcomplex-type

Resources that use this resource

ConceptMap
hl7.fhir.uv.xver-r4b.r3#0.1.0R4B-SubstanceDefinition-element-map-to-R3Cross-version mapping for FHIR R4B SubstanceDefinition to FHIR STU3 Basic

Resources that this resource uses

StructureDefinition
hl7.fhir.uv.xver-r4b.r5#0.1.0profile-DocumentReferenceCross-version Profile for R4B.DocumentReference for use in FHIR R5
ValueSet
hl7.fhir.uv.xver-r4b.r3#0.1.0R4B-substance-optical-activity-for-R3Cross-version ValueSet R4B.OpticalActivity for use in FHIR STU3
hl7.fhir.uv.xver-r4b.r3#0.1.0R4B-substance-representation-format-for-R3Cross-version ValueSet R4B.SubstanceRepresentationFormat for use in FHIR STU3
hl7.fhir.uv.xver-r4b.r3#0.1.0R4B-substance-representation-type-for-R3Cross-version ValueSet R4B.SubstanceRepresentationType for use in FHIR STU3
hl7.fhir.uv.xver-r4b.r3#0.1.0R4B-substance-stereochemistry-for-R3Cross-version ValueSet R4B.Stereochemistry for use in FHIR STU3
hl7.fhir.uv.xver-r4b.r3#0.1.0R4B-substance-structure-technique-for-R3Cross-version ValueSet R4B.StructureTechnique for use in FHIR STU3

Examples of Use for Extension

No extension usage examples found


Narrative

Note: links and images are rebased to the (stated) source

Generated Narrative: StructureDefinition ext-R4B-SubstanceDefinition.structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension 0..1ExtensionR4B: Structural information (new)
... Slices for extension 0..*ExtensionExtension
Slice: Unordered, Open by value:url
.... extension:stereochemistry 0..1ExtensionR4B: Stereochemistry type (new)
..... url 1..1uri"stereochemistry"
..... value[x] 0..1CodeableConceptStereochemistry type
Binding: R4BSubstanceStereochemistryForR3 (0.1.0) (example): The optical rotation type of a substance.
.... extension:opticalActivity 0..1ExtensionR4B: Optical activity type (new)
..... url 1..1uri"opticalActivity"
..... value[x] 0..1CodeableConceptOptical activity type
Binding: R4BSubstanceOpticalActivityForR3 (0.1.0) (example): The optical rotation type of a substance.
.... extension:molecularFormula 0..1ExtensionR4B: Molecular formula (e.g. using the Hill system) (new)
..... url 1..1uri"molecularFormula"
..... value[x] 0..1stringMolecular formula (e.g. using the Hill system)
.... extension:molecularFormulaByMoiety 0..1ExtensionR4B: Specified per moiety according to the Hill system (new)
..... url 1..1uri"molecularFormulaByMoiety"
..... value[x] 0..1stringSpecified per moiety according to the Hill system
.... extension:molecularWeight 0..1ExtensionR4B: The molecular weight or weight range (new)
..... url 1..1uri"http://hl7.org/fhir/4.3/StructureDefinition/extension-SubstanceDefinition.molecularWeight"
..... value[x] 0..0Value of extension
.... extension:technique 0..*ExtensionR4B: The method used to find the structure e.g. X-ray, NMR (new)
..... url 1..1uri"technique"
..... value[x] 0..1CodeableConceptThe method used to find the structure e.g. X-ray, NMR
Binding: R4BSubstanceStructureTechniqueForR3 (0.1.0) (example): The method used to elucidate the structure or characterization of the drug substance.
.... extension:sourceDocument 0..*ExtensionR4B: Source of information for the structure (new)
..... url 1..1uri"sourceDocument"
..... value[x] 0..1Reference(Cross-version Profile for R4B.DocumentReference for use in FHIR STU3(0.1.0) | DocumentReference)Source of information for the structure
.... extension:representation 0..*ExtensionR4B: A depiction of the structure or characterization of the substance (new)
..... Slices for extension 0..*ExtensionExtension
Slice: Unordered, Open by value:url
...... extension:type 0..1ExtensionR4B: The kind of structural representation (e.g. full, partial) (new)
....... url 1..1uri"type"
....... value[x] 0..1CodeableConceptThe kind of structural representation (e.g. full, partial)
Binding: R4BSubstanceRepresentationTypeForR3 (0.1.0) (example): A format of a substance representation.
...... extension:representation 0..1ExtensionR4B: The structural representation or characterization as a text string in a standard format (new)
....... url 1..1uri"representation"
....... value[x] 0..1stringThe structural representation or characterization as a text string in a standard format
...... extension:format 0..1ExtensionR4B: The format of the representation e.g. InChI, SMILES, MOLFILE (note: not the physical file format) (new)
....... url 1..1uri"format"
....... value[x] 0..1CodeableConceptThe format of the representation e.g. InChI, SMILES, MOLFILE (note: not the physical file format)
Binding: R4BSubstanceRepresentationFormatForR3 (0.1.0) (example): A format of a substance representation.
...... extension:document 0..1ExtensionR4B: An attachment with the structural representation e.g. a structure graphic or AnIML file (new)
....... url 1..1uri"document"
....... value[x] 0..1Reference(Cross-version Profile for R4B.DocumentReference for use in FHIR STU3(0.1.0) | DocumentReference)An attachment with the structural representation e.g. a structure graphic or AnIML file
..... url 1..1uri"representation"
..... value[x] 0..0Value of extension
... url 1..1uri"http://hl7.org/fhir/4.3/StructureDefinition/extension-SubstanceDefinition.structure"
... value[x] 0..0Value of extension

doco Documentation for this format

Source1

{
  "resourceType": "StructureDefinition",
  "id": "ext-R4B-SubstanceDefinition.structure",
  "text": {
    "status": "extensions",
    "div": "<!-- snip (see above) -->"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "fhir"
    },
    {
      "extension": [
        {
          "url": "packageId",
          "valueId": "hl7.fhir.uv.xver-r4b.r3"
        },
        {
          "url": "version",
          "valueString": "0.1.0"
        },
        {
          "url": "uri",
          "valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4b.r3"
        }
      ],
      "url": "http://hl7.org/fhir/StructureDefinition/package-source"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 0,
      "_valueInteger": {
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
            "valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4b.r3"
          }
        ]
      }
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
      "valueCode": "trial-use",
      "_valueCode": {
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
            "valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4b.r3"
          }
        ]
      }
    }
  ],
  "url": "http://hl7.org/fhir/4.3/StructureDefinition/extension-SubstanceDefinition.structure",
  "version": "0.1.0",
  "name": "ExtensionSubstanceDefinition_Structure",
  "title": "R4B: Structural information (new)",
  "status": "active",
  "experimental": false,
  "date": "2026-03-17T21:02:03.8104715+00:00",
  "publisher": "FHIR Infrastructure",
  "contact": [
    {
      "name": "FHIR Infrastructure",
      "telecom": [
        {
          "system": "url",
          "value": "http://www.hl7.org/Special/committees/fiwg"
        }
      ]
    }
  ],
  "description": "R4B: `SubstanceDefinition.structure` (new:BackboneElement)",
  "jurisdiction": [
    {
      "coding": [
        {
          "system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
          "code": "001",
          "display": "World"
        }
      ]
    }
  ],
  "purpose": "This extension is part of the cross-version definitions generated to enable use of the\r\nelement `SubstanceDefinition.structure` as defined in FHIR R4B\r\nin FHIR STU3.\r\n\r\nThe source element is defined as:\r\n`SubstanceDefinition.structure` 0..1 `BackboneElement`\r\n\r\nAcross FHIR versions, the element set has been mapped as:\r\n*  R4B: `SubstanceDefinition.structure` 0..1 `BackboneElement`\r\n\r\nFollowing are the generation technical comments:\r\nElement `SubstanceDefinition.structure` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
  "fhirVersion": "3.0.2",
  "mapping": [
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "contextType": "resource",
  "context": [
    "Basic"
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "snapshot": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "R4B: Structural information (new)",
        "definition": "R4B: `SubstanceDefinition.structure` (new:BackboneElement)",
        "comment": "Element `SubstanceDefinition.structure` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension",
          "min": 0,
          "max": "*"
        },
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() | (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension"
          }
        ],
        "isModifier": false
      },
      {
        "id": "Extension.id",
        "path": "Extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "ordered": false,
          "rules": "open"
        },
        "short": "Extension",
        "definition": "An Extension",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:stereochemistry",
        "path": "Extension.extension",
        "sliceName": "stereochemistry",
        "short": "R4B: Stereochemistry type (new)",
        "definition": "R4B: `SubstanceDefinition.structure.stereochemistry` (new:CodeableConcept)",
        "comment": "Element `SubstanceDefinition.structure.stereochemistry` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.stereochemistry` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.stereochemistry` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.stereochemistry` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.stereochemistry` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.stereochemistry` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:stereochemistry.id",
        "path": "Extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:stereochemistry.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional Content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:stereochemistry.url",
        "path": "Extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "stereochemistry",
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:stereochemistry.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Stereochemistry type",
        "definition": "Stereochemistry type.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "example",
          "description": "The optical rotation type of a substance.",
          "valueSetUri": "http://hl7.org/fhir/uv/xver/ValueSet/R4B-substance-stereochemistry-for-R3|0.1.0"
        },
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:opticalActivity",
        "path": "Extension.extension",
        "sliceName": "opticalActivity",
        "short": "R4B: Optical activity type (new)",
        "definition": "R4B: `SubstanceDefinition.structure.opticalActivity` (new:CodeableConcept)",
        "comment": "Element `SubstanceDefinition.structure.opticalActivity` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.opticalActivity` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.opticalActivity` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.opticalActivity` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.opticalActivity` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.opticalActivity` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:opticalActivity.id",
        "path": "Extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:opticalActivity.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional Content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:opticalActivity.url",
        "path": "Extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "opticalActivity",
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:opticalActivity.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Optical activity type",
        "definition": "Optical activity type.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "example",
          "description": "The optical rotation type of a substance.",
          "valueSetUri": "http://hl7.org/fhir/uv/xver/ValueSet/R4B-substance-optical-activity-for-R3|0.1.0"
        },
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularFormula",
        "path": "Extension.extension",
        "sliceName": "molecularFormula",
        "short": "R4B: Molecular formula (e.g. using the Hill system) (new)",
        "definition": "R4B: `SubstanceDefinition.structure.molecularFormula` (new:string)",
        "comment": "Element `SubstanceDefinition.structure.molecularFormula` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.molecularFormula` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.molecularFormula` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.molecularFormula` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.molecularFormula` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.molecularFormula` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularFormula.id",
        "path": "Extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularFormula.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional Content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularFormula.url",
        "path": "Extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "molecularFormula",
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularFormula.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Molecular formula (e.g. using the Hill system)",
        "definition": "Molecular formula of this substance, typically using the Hill system.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularFormulaByMoiety",
        "path": "Extension.extension",
        "sliceName": "molecularFormulaByMoiety",
        "short": "R4B: Specified per moiety according to the Hill system (new)",
        "definition": "R4B: `SubstanceDefinition.structure.molecularFormulaByMoiety` (new:string)",
        "comment": "Element `SubstanceDefinition.structure.molecularFormulaByMoiety` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.molecularFormulaByMoiety` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.molecularFormulaByMoiety` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.molecularFormulaByMoiety` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.molecularFormulaByMoiety` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.molecularFormulaByMoiety` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularFormulaByMoiety.id",
        "path": "Extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularFormulaByMoiety.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional Content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularFormulaByMoiety.url",
        "path": "Extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "molecularFormulaByMoiety",
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularFormulaByMoiety.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Specified per moiety according to the Hill system",
        "definition": "Specified per moiety according to the Hill system, i.e. first C, then H, then alphabetical, each moiety separated by a dot.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularWeight",
        "path": "Extension.extension",
        "sliceName": "molecularWeight",
        "short": "R4B: The molecular weight or weight range (new)",
        "definition": "R4B: `SubstanceDefinition.structure.molecularWeight` (new:SubstanceDefinition.molecularWeight)",
        "comment": "Element `SubstanceDefinition.structure.molecularWeight` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.molecularWeight` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.molecularWeight` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.molecularWeight` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.molecularWeight` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.molecularWeight` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularWeight.id",
        "path": "Extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularWeight.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional Content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularWeight.url",
        "path": "Extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "http://hl7.org/fhir/4.3/StructureDefinition/extension-SubstanceDefinition.molecularWeight",
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularWeight.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Value of extension",
        "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "base64Binary"
          },
          {
            "code": "boolean"
          },
          {
            "code": "code"
          },
          {
            "code": "date"
          },
          {
            "code": "dateTime"
          },
          {
            "code": "decimal"
          },
          {
            "code": "id"
          },
          {
            "code": "instant"
          },
          {
            "code": "integer"
          },
          {
            "code": "markdown"
          },
          {
            "code": "oid"
          },
          {
            "code": "positiveInt"
          },
          {
            "code": "string"
          },
          {
            "code": "time"
          },
          {
            "code": "unsignedInt"
          },
          {
            "code": "uri"
          },
          {
            "code": "Address"
          },
          {
            "code": "Age"
          },
          {
            "code": "Annotation"
          },
          {
            "code": "Attachment"
          },
          {
            "code": "CodeableConcept"
          },
          {
            "code": "Coding"
          },
          {
            "code": "ContactPoint"
          },
          {
            "code": "Count"
          },
          {
            "code": "Distance"
          },
          {
            "code": "Duration"
          },
          {
            "code": "HumanName"
          },
          {
            "code": "Identifier"
          },
          {
            "code": "Money"
          },
          {
            "code": "Period"
          },
          {
            "code": "Quantity"
          },
          {
            "code": "Range"
          },
          {
            "code": "Ratio"
          },
          {
            "code": "Reference"
          },
          {
            "code": "SampledData"
          },
          {
            "code": "Signature"
          },
          {
            "code": "Timing"
          },
          {
            "code": "Meta"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:technique",
        "path": "Extension.extension",
        "sliceName": "technique",
        "short": "R4B: The method used to find the structure e.g. X-ray, NMR (new)",
        "definition": "R4B: `SubstanceDefinition.structure.technique` (new:CodeableConcept)",
        "comment": "Element `SubstanceDefinition.structure.technique` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.technique` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.technique` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.technique` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.technique` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.technique` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:technique.id",
        "path": "Extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:technique.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional Content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:technique.url",
        "path": "Extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "technique",
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:technique.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "The method used to find the structure e.g. X-ray, NMR",
        "definition": "The method used to elucidate the structure or characterization of the drug substance. Examples: X-ray, HPLC, NMR, Peptide mapping, Ligand binding assay.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "example",
          "description": "The method used to elucidate the structure or characterization of the drug substance.",
          "valueSetUri": "http://hl7.org/fhir/uv/xver/ValueSet/R4B-substance-structure-technique-for-R3|0.1.0"
        },
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:sourceDocument",
        "path": "Extension.extension",
        "sliceName": "sourceDocument",
        "short": "R4B: Source of information for the structure (new)",
        "definition": "R4B: `SubstanceDefinition.structure.sourceDocument` (new:Reference(DocumentReference))",
        "comment": "Element `SubstanceDefinition.structure.sourceDocument` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.sourceDocument` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.sourceDocument` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.sourceDocument` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.sourceDocument` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.sourceDocument` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:sourceDocument.id",
        "path": "Extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:sourceDocument.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional Content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:sourceDocument.url",
        "path": "Extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "sourceDocument",
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:sourceDocument.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Source of information for the structure",
        "definition": "The source of information about the structure.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "Reference",
            "targetProfile": "http://hl7.org/fhir/4.3/StructureDefinition/profile-DocumentReference|0.1.0"
          },
          {
            "code": "Reference",
            "targetProfile": "http://hl7.org/fhir/StructureDefinition/DocumentReference"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:representation",
        "path": "Extension.extension",
        "sliceName": "representation",
        "short": "R4B: A depiction of the structure or characterization of the substance (new)",
        "definition": "R4B: `SubstanceDefinition.structure.representation` (new:BackboneElement)",
        "comment": "Element `SubstanceDefinition.structure.representation` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.representation` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.id",
        "path": "Extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "ordered": false,
          "rules": "open"
        },
        "short": "Extension",
        "definition": "An Extension",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:type",
        "path": "Extension.extension.extension",
        "sliceName": "type",
        "short": "R4B: The kind of structural representation (e.g. full, partial) (new)",
        "definition": "R4B: `SubstanceDefinition.structure.representation.type` (new:CodeableConcept)",
        "comment": "Element `SubstanceDefinition.structure.representation.type` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.type` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.type` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.representation.type` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.type` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.type` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:type.id",
        "path": "Extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:type.extension",
        "path": "Extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional Content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:type.url",
        "path": "Extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "type",
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:type.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "The kind of structural representation (e.g. full, partial)",
        "definition": "The kind of structural representation (e.g. full, partial).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "example",
          "description": "A format of a substance representation.",
          "valueSetUri": "http://hl7.org/fhir/uv/xver/ValueSet/R4B-substance-representation-type-for-R3|0.1.0"
        },
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:representation",
        "path": "Extension.extension.extension",
        "sliceName": "representation",
        "short": "R4B: The structural representation or characterization as a text string in a standard format (new)",
        "definition": "R4B: `SubstanceDefinition.structure.representation.representation` (new:string)",
        "comment": "Element `SubstanceDefinition.structure.representation.representation` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.representation` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.representation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.representation.representation` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.representation` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.representation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:representation.id",
        "path": "Extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:representation.extension",
        "path": "Extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional Content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:representation.url",
        "path": "Extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "representation",
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:representation.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "The structural representation or characterization as a text string in a standard format",
        "definition": "The structural representation or characterization as a text string in a standard format.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:format",
        "path": "Extension.extension.extension",
        "sliceName": "format",
        "short": "R4B: The format of the representation e.g. InChI, SMILES, MOLFILE (note: not the physical file format) (new)",
        "definition": "R4B: `SubstanceDefinition.structure.representation.format` (new:CodeableConcept)",
        "comment": "Element `SubstanceDefinition.structure.representation.format` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.format` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.format` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.representation.format` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.format` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.format` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:format.id",
        "path": "Extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:format.extension",
        "path": "Extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional Content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:format.url",
        "path": "Extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "format",
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:format.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "The format of the representation e.g. InChI, SMILES, MOLFILE (note: not the physical file format)",
        "definition": "The format of the representation e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF. The logical content type rather than the physical file format of a document.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "example",
          "description": "A format of a substance representation.",
          "valueSetUri": "http://hl7.org/fhir/uv/xver/ValueSet/R4B-substance-representation-format-for-R3|0.1.0"
        },
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:document",
        "path": "Extension.extension.extension",
        "sliceName": "document",
        "short": "R4B: An attachment with the structural representation e.g. a structure graphic or AnIML file (new)",
        "definition": "R4B: `SubstanceDefinition.structure.representation.document` (new:Reference(DocumentReference))",
        "comment": "Element `SubstanceDefinition.structure.representation.document` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.document` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.document` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.representation.document` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.document` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.document` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:document.id",
        "path": "Extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:document.extension",
        "path": "Extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional Content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:document.url",
        "path": "Extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "document",
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:document.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "An attachment with the structural representation e.g. a structure graphic or AnIML file",
        "definition": "An attached file with the structural representation or characterization e.g. a molecular structure graphic of the substance, a JCAMP or AnIML file.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "Reference",
            "targetProfile": "http://hl7.org/fhir/4.3/StructureDefinition/profile-DocumentReference|0.1.0"
          },
          {
            "code": "Reference",
            "targetProfile": "http://hl7.org/fhir/StructureDefinition/DocumentReference"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.url",
        "path": "Extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "representation",
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Value of extension",
        "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "base64Binary"
          },
          {
            "code": "boolean"
          },
          {
            "code": "code"
          },
          {
            "code": "date"
          },
          {
            "code": "dateTime"
          },
          {
            "code": "decimal"
          },
          {
            "code": "id"
          },
          {
            "code": "instant"
          },
          {
            "code": "integer"
          },
          {
            "code": "markdown"
          },
          {
            "code": "oid"
          },
          {
            "code": "positiveInt"
          },
          {
            "code": "string"
          },
          {
            "code": "time"
          },
          {
            "code": "unsignedInt"
          },
          {
            "code": "uri"
          },
          {
            "code": "Address"
          },
          {
            "code": "Age"
          },
          {
            "code": "Annotation"
          },
          {
            "code": "Attachment"
          },
          {
            "code": "CodeableConcept"
          },
          {
            "code": "Coding"
          },
          {
            "code": "ContactPoint"
          },
          {
            "code": "Count"
          },
          {
            "code": "Distance"
          },
          {
            "code": "Duration"
          },
          {
            "code": "HumanName"
          },
          {
            "code": "Identifier"
          },
          {
            "code": "Money"
          },
          {
            "code": "Period"
          },
          {
            "code": "Quantity"
          },
          {
            "code": "Range"
          },
          {
            "code": "Ratio"
          },
          {
            "code": "Reference"
          },
          {
            "code": "SampledData"
          },
          {
            "code": "Signature"
          },
          {
            "code": "Timing"
          },
          {
            "code": "Meta"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "http://hl7.org/fhir/4.3/StructureDefinition/extension-SubstanceDefinition.structure",
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "short": "Value of extension",
        "definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "base64Binary"
          },
          {
            "code": "boolean"
          },
          {
            "code": "code"
          },
          {
            "code": "date"
          },
          {
            "code": "dateTime"
          },
          {
            "code": "decimal"
          },
          {
            "code": "id"
          },
          {
            "code": "instant"
          },
          {
            "code": "integer"
          },
          {
            "code": "markdown"
          },
          {
            "code": "oid"
          },
          {
            "code": "positiveInt"
          },
          {
            "code": "string"
          },
          {
            "code": "time"
          },
          {
            "code": "unsignedInt"
          },
          {
            "code": "uri"
          },
          {
            "code": "Address"
          },
          {
            "code": "Age"
          },
          {
            "code": "Annotation"
          },
          {
            "code": "Attachment"
          },
          {
            "code": "CodeableConcept"
          },
          {
            "code": "Coding"
          },
          {
            "code": "ContactPoint"
          },
          {
            "code": "Count"
          },
          {
            "code": "Distance"
          },
          {
            "code": "Duration"
          },
          {
            "code": "HumanName"
          },
          {
            "code": "Identifier"
          },
          {
            "code": "Money"
          },
          {
            "code": "Period"
          },
          {
            "code": "Quantity"
          },
          {
            "code": "Range"
          },
          {
            "code": "Ratio"
          },
          {
            "code": "Reference"
          },
          {
            "code": "SampledData"
          },
          {
            "code": "Signature"
          },
          {
            "code": "Timing"
          },
          {
            "code": "Meta"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      }
    ]
  },
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "R4B: Structural information (new)",
        "definition": "R4B: `SubstanceDefinition.structure` (new:BackboneElement)",
        "comment": "Element `SubstanceDefinition.structure` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension",
          "min": 0,
          "max": "*"
        },
        "isModifier": false
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "ordered": false,
          "rules": "open"
        },
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:stereochemistry",
        "path": "Extension.extension",
        "sliceName": "stereochemistry",
        "short": "R4B: Stereochemistry type (new)",
        "definition": "R4B: `SubstanceDefinition.structure.stereochemistry` (new:CodeableConcept)",
        "comment": "Element `SubstanceDefinition.structure.stereochemistry` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.stereochemistry` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.stereochemistry` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.stereochemistry` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.stereochemistry` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.stereochemistry` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:stereochemistry.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "stereochemistry"
      },
      {
        "id": "Extension.extension:stereochemistry.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Stereochemistry type",
        "definition": "Stereochemistry type.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "example",
          "description": "The optical rotation type of a substance.",
          "valueSetUri": "http://hl7.org/fhir/uv/xver/ValueSet/R4B-substance-stereochemistry-for-R3|0.1.0"
        }
      },
      {
        "id": "Extension.extension:opticalActivity",
        "path": "Extension.extension",
        "sliceName": "opticalActivity",
        "short": "R4B: Optical activity type (new)",
        "definition": "R4B: `SubstanceDefinition.structure.opticalActivity` (new:CodeableConcept)",
        "comment": "Element `SubstanceDefinition.structure.opticalActivity` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.opticalActivity` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.opticalActivity` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.opticalActivity` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.opticalActivity` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.opticalActivity` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:opticalActivity.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "opticalActivity"
      },
      {
        "id": "Extension.extension:opticalActivity.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Optical activity type",
        "definition": "Optical activity type.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "example",
          "description": "The optical rotation type of a substance.",
          "valueSetUri": "http://hl7.org/fhir/uv/xver/ValueSet/R4B-substance-optical-activity-for-R3|0.1.0"
        }
      },
      {
        "id": "Extension.extension:molecularFormula",
        "path": "Extension.extension",
        "sliceName": "molecularFormula",
        "short": "R4B: Molecular formula (e.g. using the Hill system) (new)",
        "definition": "R4B: `SubstanceDefinition.structure.molecularFormula` (new:string)",
        "comment": "Element `SubstanceDefinition.structure.molecularFormula` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.molecularFormula` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.molecularFormula` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.molecularFormula` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.molecularFormula` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.molecularFormula` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:molecularFormula.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "molecularFormula"
      },
      {
        "id": "Extension.extension:molecularFormula.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Molecular formula (e.g. using the Hill system)",
        "definition": "Molecular formula of this substance, typically using the Hill system.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularFormulaByMoiety",
        "path": "Extension.extension",
        "sliceName": "molecularFormulaByMoiety",
        "short": "R4B: Specified per moiety according to the Hill system (new)",
        "definition": "R4B: `SubstanceDefinition.structure.molecularFormulaByMoiety` (new:string)",
        "comment": "Element `SubstanceDefinition.structure.molecularFormulaByMoiety` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.molecularFormulaByMoiety` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.molecularFormulaByMoiety` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.molecularFormulaByMoiety` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.molecularFormulaByMoiety` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.molecularFormulaByMoiety` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:molecularFormulaByMoiety.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "molecularFormulaByMoiety"
      },
      {
        "id": "Extension.extension:molecularFormulaByMoiety.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Specified per moiety according to the Hill system",
        "definition": "Specified per moiety according to the Hill system, i.e. first C, then H, then alphabetical, each moiety separated by a dot.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:molecularWeight",
        "path": "Extension.extension",
        "sliceName": "molecularWeight",
        "short": "R4B: The molecular weight or weight range (new)",
        "definition": "R4B: `SubstanceDefinition.structure.molecularWeight` (new:SubstanceDefinition.molecularWeight)",
        "comment": "Element `SubstanceDefinition.structure.molecularWeight` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.molecularWeight` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.molecularWeight` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.molecularWeight` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.molecularWeight` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.molecularWeight` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:molecularWeight.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "http://hl7.org/fhir/4.3/StructureDefinition/extension-SubstanceDefinition.molecularWeight"
      },
      {
        "id": "Extension.extension:molecularWeight.value[x]",
        "path": "Extension.extension.value[x]",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        }
      },
      {
        "id": "Extension.extension:technique",
        "path": "Extension.extension",
        "sliceName": "technique",
        "short": "R4B: The method used to find the structure e.g. X-ray, NMR (new)",
        "definition": "R4B: `SubstanceDefinition.structure.technique` (new:CodeableConcept)",
        "comment": "Element `SubstanceDefinition.structure.technique` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.technique` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.technique` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.technique` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.technique` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.technique` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:technique.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "technique"
      },
      {
        "id": "Extension.extension:technique.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "The method used to find the structure e.g. X-ray, NMR",
        "definition": "The method used to elucidate the structure or characterization of the drug substance. Examples: X-ray, HPLC, NMR, Peptide mapping, Ligand binding assay.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "example",
          "description": "The method used to elucidate the structure or characterization of the drug substance.",
          "valueSetUri": "http://hl7.org/fhir/uv/xver/ValueSet/R4B-substance-structure-technique-for-R3|0.1.0"
        }
      },
      {
        "id": "Extension.extension:sourceDocument",
        "path": "Extension.extension",
        "sliceName": "sourceDocument",
        "short": "R4B: Source of information for the structure (new)",
        "definition": "R4B: `SubstanceDefinition.structure.sourceDocument` (new:Reference(DocumentReference))",
        "comment": "Element `SubstanceDefinition.structure.sourceDocument` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.sourceDocument` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.sourceDocument` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.sourceDocument` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.sourceDocument` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.sourceDocument` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:sourceDocument.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "sourceDocument"
      },
      {
        "id": "Extension.extension:sourceDocument.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Source of information for the structure",
        "definition": "The source of information about the structure.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "Reference",
            "targetProfile": "http://hl7.org/fhir/4.3/StructureDefinition/profile-DocumentReference|0.1.0"
          },
          {
            "code": "Reference",
            "targetProfile": "http://hl7.org/fhir/StructureDefinition/DocumentReference"
          }
        ]
      },
      {
        "id": "Extension.extension:representation",
        "path": "Extension.extension",
        "sliceName": "representation",
        "short": "R4B: A depiction of the structure or characterization of the substance (new)",
        "definition": "R4B: `SubstanceDefinition.structure.representation` (new:BackboneElement)",
        "comment": "Element `SubstanceDefinition.structure.representation` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.representation` is part of an existing definition because parent element `SubstanceDefinition.structure` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:representation.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "ordered": false,
          "rules": "open"
        },
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:representation.extension:type",
        "path": "Extension.extension.extension",
        "sliceName": "type",
        "short": "R4B: The kind of structural representation (e.g. full, partial) (new)",
        "definition": "R4B: `SubstanceDefinition.structure.representation.type` (new:CodeableConcept)",
        "comment": "Element `SubstanceDefinition.structure.representation.type` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.type` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.type` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.representation.type` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.type` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.type` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:representation.extension:type.url",
        "path": "Extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "type"
      },
      {
        "id": "Extension.extension:representation.extension:type.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "The kind of structural representation (e.g. full, partial)",
        "definition": "The kind of structural representation (e.g. full, partial).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "example",
          "description": "A format of a substance representation.",
          "valueSetUri": "http://hl7.org/fhir/uv/xver/ValueSet/R4B-substance-representation-type-for-R3|0.1.0"
        }
      },
      {
        "id": "Extension.extension:representation.extension:representation",
        "path": "Extension.extension.extension",
        "sliceName": "representation",
        "short": "R4B: The structural representation or characterization as a text string in a standard format (new)",
        "definition": "R4B: `SubstanceDefinition.structure.representation.representation` (new:string)",
        "comment": "Element `SubstanceDefinition.structure.representation.representation` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.representation` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.representation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.representation.representation` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.representation` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.representation` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:representation.extension:representation.url",
        "path": "Extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "representation"
      },
      {
        "id": "Extension.extension:representation.extension:representation.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "The structural representation or characterization as a text string in a standard format",
        "definition": "The structural representation or characterization as a text string in a standard format.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.extension:format",
        "path": "Extension.extension.extension",
        "sliceName": "format",
        "short": "R4B: The format of the representation e.g. InChI, SMILES, MOLFILE (note: not the physical file format) (new)",
        "definition": "R4B: `SubstanceDefinition.structure.representation.format` (new:CodeableConcept)",
        "comment": "Element `SubstanceDefinition.structure.representation.format` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.format` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.format` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.representation.format` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.format` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.format` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:representation.extension:format.url",
        "path": "Extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "format"
      },
      {
        "id": "Extension.extension:representation.extension:format.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "The format of the representation e.g. InChI, SMILES, MOLFILE (note: not the physical file format)",
        "definition": "The format of the representation e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF. The logical content type rather than the physical file format of a document.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "strength": "example",
          "description": "A format of a substance representation.",
          "valueSetUri": "http://hl7.org/fhir/uv/xver/ValueSet/R4B-substance-representation-format-for-R3|0.1.0"
        }
      },
      {
        "id": "Extension.extension:representation.extension:document",
        "path": "Extension.extension.extension",
        "sliceName": "document",
        "short": "R4B: An attachment with the structural representation e.g. a structure graphic or AnIML file (new)",
        "definition": "R4B: `SubstanceDefinition.structure.representation.document` (new:Reference(DocumentReference))",
        "comment": "Element `SubstanceDefinition.structure.representation.document` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.document` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.document` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstanceDefinition.structure.representation.document` is part of an existing definition because parent element `SubstanceDefinition.structure.representation` requires a cross-version extension.\nElement `SubstanceDefinition.structure.representation.document` is not mapped to FHIR STU3, since FHIR R4B `SubstanceDefinition` is not mapped.\nElement `SubstanceDefinition.structure.representation.document` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:representation.extension:document.url",
        "path": "Extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "document"
      },
      {
        "id": "Extension.extension:representation.extension:document.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "An attachment with the structural representation e.g. a structure graphic or AnIML file",
        "definition": "An attached file with the structural representation or characterization e.g. a molecular structure graphic of the substance, a JCAMP or AnIML file.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "Reference",
            "targetProfile": "http://hl7.org/fhir/4.3/StructureDefinition/profile-DocumentReference|0.1.0"
          },
          {
            "code": "Reference",
            "targetProfile": "http://hl7.org/fhir/StructureDefinition/DocumentReference"
          }
        ]
      },
      {
        "id": "Extension.extension:representation.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "representation"
      },
      {
        "id": "Extension.extension:representation.value[x]",
        "path": "Extension.extension.value[x]",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        }
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "http://hl7.org/fhir/4.3/StructureDefinition/extension-SubstanceDefinition.structure"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        }
      }
    ]
  }
}