{
  "resourceType": "StructureDefinition",
  "url": "https://example.org/fhir/StructureDefinition/MyMedication",
  "name": "MyMedication",
  "status": "draft",
  "fhirVersion": "4.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "Medication",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Medication",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Medication.identifier",
        "path": "Medication.identifier",
        "label": "anti_arrhythmic_id, beta_blocker_id"
      },
      {
        "id": "Medication.code",
        "path": "Medication.code",
        "label": "anti_arrhythmic_name, beta_blocker_name"
      }
    ]
  }
}