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": ""}
 MACKINAW CITY KhU   g united states         H -84.75188    L. itI9C      180 ?1<   4) 1945-08-21    rudbeckia <3 ^A    
{"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "L.", "genus": "Rudbeckia", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "180", "verbatimEventDate": "1945-08-21", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "Mackinaw City", "decimalLatitude": "", "decimalLongitude": "-84.75188", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}