[ {
  "sequence" : 1,
  "text" : "1800 mg (1000 mg/m2) orally twice daily from days 1-14 of cycle",
  "doseAndRate" : [ {
    "type" : {
      "coding" : [ {
        "system" : "http://terminology.hl7.org/CodeSystem/dose-rate-type",
        "code" : "calculated",
        "display" : "Calculated"
      } ]
    },
    "doseQuantity" : {
      "value" : 1800,
      "unit" : "mg/m2",
      "system" : "http://unitsofmeasure.org",
      "code" : "mg/m2"
    }
  }, {
    "type" : {
      "coding" : [ {
        "system" : "http://terminology.hl7.org/CodeSystem/dose-rate-type",
        "code" : "ordered",
        "display" : "ordered"
      } ]
    },
    "doseQuantity" : {
      "value" : 1000,
      "unit" : "mg",
      "system" : "http://unitsofmeasure.org",
      "code" : "mg"
    }
  } ]
} ]