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": ""}
CROTON LEPTOSTACHYUS ]   _-+o MALPIGHIALES   :  shrub ca. 2-2.5 m tall; flowers white    1544261 < A  r. s. cowan 1kCIj  along sandstone cliff m     leptostachyus     >9[T Santander 1953-06-14 ?j?  JEAN H. LANGENHEIM 1n?   Colom8ia W   4%f KUNTH   500 G0a     Y ; croton  
{"catalogNumber": "1544261", "order": "Malpighiales", "family": "", "scientificName": "Croton leptostachyus", "scientificNameAuthorship": "Kunth", "genus": "Croton", "subgenus": "", "specificEpithet": "leptostachyus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "R. S. Cowan", "recordedBy": "Jean H. Langenheim", "recordNumber": "", "verbatimEventDate": "1953-06-14", "habitat": "Along sandstone cliff", "occurrenceRemarks": "Shrub ca. 2-2.5 m tall; flowers white", "associatedTaxa": "", "country": "Colombia", "stateProvince": "Santander", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "500", "maximumElevationInMeters": ""}