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": ""}
   b=_D 1915-08-16 GRINDELIA SQUARROSA VAR. SQUARROSA S   KR FIELD,  squarrosa SB   var. /F^O.  Magician Lake,     1 UNITD STATES    Y Q 7466 42.071076 $<r,~   cs -86.15678    8 Cass or Van Buren CRONQUIST d4  squarrosa wGrbp   svO ] 1217851   m GRINDELIA   ASTERACEAE J8O@  Asterales S~ 
{"catalogNumber": "1217851", "order": "Asterales", "family": "Asteraceae", "scientificName": "Grindelia squarrosa var. squarrosa", "scientificNameAuthorship": "Cronquist", "genus": "Grindelia", "subgenus": "", "specificEpithet": "squarrosa", "verbatimTaxonRank": "var.", "infraspecificEpithet": "squarrosa", "identifiedBy": "", "recordedBy": "", "recordNumber": "7466", "verbatimEventDate": "1915-08-16", "habitat": "Field,", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Cass or Van Buren", "municipality": "", "locality": "Magician Lake,", "decimalLatitude": "42.071076", "decimalLongitude": "-86.15678", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}