{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "Chemical substances are a single substance type whose primary defining element is the molecular structure. Chemical substances shall be defined on the basis of their complete covalent molecular structure; the presence of a salt (counter-ion) and/or solvates (water, alcohols) is also captured. Purity, grade, physical form or particle size are not taken into account in the definition of a chemical substance or in the assignment of a Substance ID.",
  "system" : "http://hl7.org/fhir/data-types",
  "property" : [ ],
  "codesystem" : "ad182f23-5413-52a0-8d5d-3696d5ec41a2",
  "concept_id" : "9b7b9e54-19a6-5c0c-9254-4b7d34dde652",
  "ancestors" : {
    "SubstanceAmount" : 0
  },
  "id" : "3d6228fb-15e7-4ede-abbc-587fe718e1a7",
  "code" : "SubstanceAmount",
  "display" : "SubstanceAmount",
  "version" : "4.0.1"
}