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": ""}
 %cx3  united states   30 ? var.     decatur     s.n. ,w@u   ~d,  1539946 Heterotheca S#!&   Asterales    heterotheca camporum var. glandulissima a   aaZBA CONTACT UM HERBARIUM 1855 ?j-   george l. ames c>CT   | camporum ASTERACEAE z   glandulissima d|B     TENNESSEE MLoQF 
{"catalogNumber": "1539946", "order": "Asterales", "family": "Asteraceae", "scientificName": "Heterotheca camporum var. glandulissima", "scientificNameAuthorship": "", "genus": "Heterotheca", "subgenus": "", "specificEpithet": "camporum", "verbatimTaxonRank": "var.", "infraspecificEpithet": "glandulissima", "identifiedBy": "", "recordedBy": "George L. Ames", "recordNumber": "s.n.", "verbatimEventDate": "1855", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Tennessee", "county": "Decatur", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}