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": ""}
united states  RW   Croton >:+v        SANDY SOIL Aa=-D   QL k MAPIGHIALES  !*N1 LeRoy Abrams     / EUPHORBIACEAE 1543613    los angeles &/23+   Hook. hx   %3 P croton setiger    14 1902-08-20  l7y  2966    Q? setiger c U P. E. BERRY 
{"catalogNumber": "1543613", "order": "Malpighiales", "family": "Euphorbiaceae", "scientificName": "Croton setiger", "scientificNameAuthorship": "Hook.", "genus": "Croton", "subgenus": "", "specificEpithet": "setiger", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "P. E. Berry", "recordedBy": "LeRoy Abrams", "recordNumber": "2966", "verbatimEventDate": "1902-08-20", "habitat": "Sandy soil", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Los Angeles", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}