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": ""}
1641999  6  opuntia engelmannii rC5   $ TEXAS     ENGELMANNII OU`#[  W. BASE OF CHILICOTAL MT $:(C    United tates    Salm-Dyck > KA<  OPUNT4IA IG   57 m5    daH, 1947-0530   2qA Margery S. Anthony 975 |  caryophyllales | u n    brewsteBr )(]@      CACTACEAE 
{"catalogNumber": "1641999", "order": "Caryophyllales", "family": "Cactaceae", "scientificName": "Opuntia engelmannii", "scientificNameAuthorship": "Salm-Dyck", "genus": "Opuntia", "subgenus": "", "specificEpithet": "engelmannii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Margery S. Anthony", "recordNumber": "57", "verbatimEventDate": "1947-05-30", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "Brewster", "municipality": "", "locality": "w. base of Chilicotal Mt", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "975", "maximumElevationInMeters": ""}