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": ""}
     ym MACROCENTRA      BREWSTER X8  SOUTH OF PULLIAM BLUFFS, CHISOS MTS, BIG BEND NAT. PARK v)E   = IN GRASSY MEADOW  texas P  caryophyllales d  opuntia R W5      ENGELM. d*Gl   opuntia macrocentra G  F @4 1644107   +E1 United States 
{"catalogNumber": "1644107", "order": "Caryophyllales", "family": "", "scientificName": "Opuntia macrocentra", "scientificNameAuthorship": "Engelm.", "genus": "Opuntia", "subgenus": "", "specificEpithet": "macrocentra", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "in grassy meadow", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "Brewster", "municipality": "", "locality": "south of Pulliam Bluffs, Chisos Mts, Big Bend Nat. Park", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}