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": ""}
  U 16896    Crataegus douglas+ii       C>F  rosales    o  45.71738   >6bR ON N SIDE OF DINGMAN MARSH FLOODING JUST E OF DAM, SEG. 4, T38N, R3W, CA. 4 MI SSE OF MACKINAW CITY.  elw3 MICHIGAN    0_ 2005-09-12   EDWARD G. VOSS =V F   @18q 1221418      
{"catalogNumber": "1221418", "order": "Rosales", "family": "", "scientificName": "Crataegus douglasii", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Edward G. Voss", "recordNumber": "16896", "verbatimEventDate": "2005-09-12", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "on N side of Dingman Marsh Flooding just E of dam, sec. 4, T38N, R3W, ca. 4 mi SSE of Mackinaw CIty.", "decimalLatitude": "45.71738", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}