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": ""}
   CT4) EUPHORBIA DENTATA  United States v     Arkansas | R  hot spring @  malpighiales u;7      n it Euphorbiaceae   mark h. mayfield ^oo.  30278 =       ~qGP@ NEAREST POSQT OFFICE: MAGNET COVE    gVi 1950-10-28  x3 Clay ridges
{"catalogNumber": "", "order": "Malpighiales", "family": "Euphorbiaceae", "scientificName": "Euphorbia dentata", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Mark H. Mayfield", "recordedBy": "", "recordNumber": "30278", "verbatimEventDate": "1950-10-28", "habitat": "Clay ridges", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Arkansas", "county": "Hot Spring", "municipality": "", "locality": "Nearest post office: Magnet Cove", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}