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": ""}
rubiaceae $2    7X UNITED STATES    PrTn tinctorium   $ 1244068  Q john v. freudenstein      rkE gentianales  T23N R8E Sec 8 along Tuttle Marsh Rd. Rb7@     ~yf 1983-06-30 Galium tinctorium lwy r  (l.) scop. V&.    GALIUM 4+Wd  44.4038 8  653 =   Michigan o   
{"catalogNumber": "1244068", "order": "Gentianales", "family": "Rubiaceae", "scientificName": "Galium tinctorium", "scientificNameAuthorship": "(L.) Scop.", "genus": "Galium", "subgenus": "", "specificEpithet": "tinctorium", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John V. Freudenstein", "recordNumber": "653", "verbatimEventDate": "1983-06-30", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "T23N R8E Sec 8 along Tuttle Marsh Rd.", "decimalLatitude": "44.4038", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}