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": ""}
 JC FU 37.9   2]x8 united states  X purpurea   Robert Peter _gX  1834-06-21 w M^1     3hL. Fayette   (y2 NEAR ROGERS', KENTUCKY RIVER AT THE RICHMOND ROAD  I cliffs; hillsi.de    1536172 (jP0   z0~L GENTIANALES Kentuy M    QG(0n Rubiaceae   789I Cx0    s y -84.36667
{"catalogNumber": "1536172", "order": "Gentianales", "family": "Rubiaceae", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "purpurea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Robert Peter", "recordNumber": "789i", "verbatimEventDate": "1834-06-21", "habitat": "Cliffs; hillside", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Kentucky", "county": "Fayette", "municipality": "", "locality": "Near Rogers', Kentucky River at the Richmond Road", "decimalLatitude": "37.9", "decimalLongitude": "-84.36667", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}