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": ""}
  8! -84.696261    Brassicales tf?%!   ?P john h. ehlers       Is CHEBOYGAN        Cj 45.580949  2X DENSIFLORUM     SCHRAD.   1463918 :   Lepidium densiflorubm a  
{"catalogNumber": "1463918", "order": "Brassicales", "family": "", "scientificName": "Lepidium densiflorum", "scientificNameAuthorship": "Schrad.", "genus": "", "subgenus": "", "specificEpithet": "densiflorum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Cheboygan", "municipality": "", "locality": "", "decimalLatitude": "45.580949", "decimalLongitude": "-84.696261", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}