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": ""}
   C   Margery S. Anthony    M  cactaceae    e-B 4 mi. s. on Hot Springs turnoff from road to Basin, Big Bend Nat. Park    engelmannii b(7       $` texas Op~untia kh6(_   ZT?u^ 55  4zQ( Salm-Dyck  1644000  uLh    u2  United States on slopes of low hill 3    <8 1947-04-30 
{"catalogNumber": "1644000", "order": "", "family": "Cactaceae", "scientificName": "", "scientificNameAuthorship": "Salm-Dyck", "genus": "Opuntia", "subgenus": "", "specificEpithet": "engelmannii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Margery S. Anthony", "recordNumber": "55", "verbatimEventDate": "1947-04-30", "habitat": "on slopes of low hill", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "", "municipality": "", "locality": "4 mi. s. on Hot Springs turnoff from road to Basin, Big Bend Nat. Park", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}