Patient reports they previous said they took Amoxicillin but really didn't

{
  "resourceType" : "MedicationStatement",
  "id" : "example005",
  "status" : "entered-in-error",
  "medication" : {
    "concept" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "27658006",
        "display" : "Product containing amoxicillin (medicinal product)"
      }]
    }
  },
  "subject" : {
    "reference" : "Patient/pat1",
    "display" : "Donald Duck"
  },
  "encounter" : {
    "reference" : "Encounter/f203"
  },
  "effectiveDateTime" : "2014-01-23",
  "dateAsserted" : "2015-02-22",
  "informationSource" : [{
    "reference" : "Patient/pat1",
    "display" : "Donald Duck"
  }],
  "note" : [{
    "text" : "Patient indicated that they thought it was Amoxicillin they were taking but it was really Erythromycin"
  }]
}