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": ""}
 @1/ s.n.  c1% cr0ton heptalon   Y@k: heptalon  1543340 ZJk      du TEXAS   o  Bast&rop  I.lP 1937-06-30 euphorbiaceae HRZ   L0v UNITED STATES  CROTON E    A Malpighiales B. C. Tharp f#dG    ^ (Kuntze) B.W.van Ee & P.E.Berry   4CX no named locality for catalog no: 1543340    P. E. Berry    
{"catalogNumber": "1543340", "order": "Malpighiales", "family": "Euphorbiaceae", "scientificName": "Croton heptalon", "scientificNameAuthorship": "(Kuntze) B.W.van Ee & P.E.Berry", "genus": "Croton", "subgenus": "", "specificEpithet": "heptalon", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "P. E. Berry", "recordedBy": "B. C. Tharp", "recordNumber": "s.n.", "verbatimEventDate": "1937-06-30", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "Bastrop", "municipality": "", "locality": "no named locality for catalog no: 1543340", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}