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": ""}
cactaceae      Dunes at Tremont, slope of Mst Tom U0vmP  OPUNTIA CESPITOSA K@h,  L#ucas C. Majure g  CESPITOSA +  S.N. J    =sx Opuntia 1924-07-20 3     CARYOPHVLLALES u<P   38aR- United States 1644286 x   + v OPEN SANDY SLOPE  MARCUS W. LYON, JR. 7k2r      Indiana  9tx     2@=( port3r 
{"catalogNumber": "1644286", "order": "Caryophyllales", "family": "Cactaceae", "scientificName": "Opuntia cespitosa", "scientificNameAuthorship": "", "genus": "Opuntia", "subgenus": "", "specificEpithet": "cespitosa", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Lucas C. Majure", "recordedBy": "Marcus W. Lyon, Jr.", "recordNumber": "s.n.", "verbatimEventDate": "1924-07-20", "habitat": "Open sandy slope", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Indiana", "county": "Porter", "municipality": "", "locality": "Dunes at Tremont, slope of Mt Tom", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}