Request with multiple dosages and timings.

{
  "resourceType" : "MedicationRequest",
  "id" : "medrx004",
  "contained" : [{
    "resourceType" : "Medication",
    "id" : "med0312",
    "code" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "116805008",
        "display" : "Immune serum globulin administration by intravascular infusion"
      }],
      "text" : "GAMMAGARD Liquid"
    }
  }],
  "identifier" : [{
    "use" : "official",
    "system" : "http://www.bmc.nl/portal/prescriptions",
    "value" : "12345689"
  }],
  "status" : "completed",
  "intent" : "order",
  "medication" : {
    "reference" : {
      "reference" : "#med0312",
      "display" : "Nystatin 100,000 u/ml oral suspension"
    }
  },
  "subject" : {
    "reference" : "Patient/pat1",
    "display" : "Donald Duck"
  },
  "authoredOn" : "2015-01-15",
  "requester" : {
    "reference" : "Practitioner/f007",
    "display" : "Patrick Pump"
  },
  "dosageInstruction" : [{
    "sequence" : 1,
    "text" : "Administer in 100cc NS as follows: First treatment infuse over 90 minutes, if no reaction then second treatment infuse over 60 minutes, if no reaction then on third and following treatments give over 30 minutes.",
    "timing" : {
      "event" : ["2023-01-18T00:00:00.000Z"]
    },
    "route" : {
      "coding" : [{
        "system" : "http://flatiron.com/CodeSystem/Route",
        "code" : "IV"
      }]
    },
    "doseAndRate" : [{
      "type" : {
        "coding" : [{
          "system" : "http://terminology.hl7.org/CodeSystem/dose-rate-type",
          "code" : "ordered",
          "display" : "Ordered"
        }]
      },
      "doseQuantity" : {
        "value" : 5,
        "unit" : "mg/kg"
      }
    },
    {
      "type" : {
        "coding" : [{
          "system" : "http://terminology.hl7.org/CodeSystem/dose-rate-type",
          "code" : "calculated",
          "display" : "Calculated"
        }]
      },
      "doseQuantity" : {
        "value" : 340,
        "unit" : "mg"
      }
    }]
  }]
}