{
  "resourceType": "StructureDefinition",
  "id": "MedicationStrengthMERT",
  "url": "http://example.org/fhir/StructureDefinition/medication-strength",
  "version": "0.1.0",
  "name": "MedicationStrengthMERT",
  "title": "Medication Strength (MERT)",
  "status": "draft",
  "description": "Complex extension carrying medication strength as free text and/or structured quantity.",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "expression": "MedicationRequest",
      "type": "element"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Medication Strength (MERT)",
        "definition": "Complex extension carrying medication strength as free text and/or structured quantity."
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "min": 1
      },
      {
        "id": "Extension.extension:strengthText",
        "path": "Extension.extension",
        "sliceName": "strengthText",
        "min": 1,
        "max": "1",
        "mustSupport": true
      },
      {
        "id": "Extension.extension:strengthText.extension",
        "path": "Extension.extension.extension",
        "max": "0"
      },
      {
        "id": "Extension.extension:strengthText.url",
        "path": "Extension.extension.url",
        "fixedUri": "strengthText"
      },
      {
        "id": "Extension.extension:strengthText.value[x]",
        "path": "Extension.extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:strengthQuantity",
        "path": "Extension.extension",
        "sliceName": "strengthQuantity",
        "min": 0,
        "max": "1",
        "mustSupport": true
      },
      {
        "id": "Extension.extension:strengthQuantity.extension",
        "path": "Extension.extension.extension",
        "max": "0"
      },
      {
        "id": "Extension.extension:strengthQuantity.url",
        "path": "Extension.extension.url",
        "fixedUri": "strengthQuantity"
      },
      {
        "id": "Extension.extension:strengthQuantity.value[x]",
        "path": "Extension.extension.value[x]",
        "type": [
          {
            "code": "Quantity"
          }
        ]
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "http://example.org/fhir/StructureDefinition/medication-strength"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "max": "0"
      }
    ]
  }
}