Refactor the unstructured text into a valid JSON dictionary. The key names follow the Darwin Core Archive Standard. If a key lacks content, then insert an empty string. Fill in the following JSON structure as required: {"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}
  MOBILE 5 r=   w (L.) Cabrera   5] ASTERACEAE  r PURPUREA     1~ ALABAMA   ADAMS JEWETT `1`e  GAMOCHAETA 9C&   i+U Asterales  N5]t 1538700   UNITED STATES |*   gamochaeta purpurea &3y7   S.AR 1839-04     S.N. cbs  
{"catalogNumber": "1538700", "order": "Asterales", "family": "Asteraceae", "scientificName": "Gamochaeta purpurea", "scientificNameAuthorship": "(L.) Cabrera", "genus": "Gamochaeta", "subgenus": "", "specificEpithet": "purpurea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Adams Jewett", "recordNumber": "s.n.", "verbatimEventDate": "1839-04", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Alabama", "county": "Mobile", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}