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": ""}
(KUNTZE) BZ.W.VAN EE & P.E.BERRY 0     Oj Sandy loam on top of natural levee, badly cutover fmesquire brush. Lowlands 5489 + H    Q= ^ CROTON HEPTALON     k 1960-09-14 m. johnston & j. crutchfield  1+   EUPHORBIACEAE a  MEXICO 8q  Tamaulipas HB$D  croton  3``      , mt/ Malpighiales   z3 P. E. Berry 34 MILES SOUTH OF MATAMOROS ON THE ROAD TO SAN FERNANDO; RIO GRANDE DELTA ^    3@j heptalon 
{"catalogNumber": "", "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": "M. Johnston & J. Crutchfield", "recordNumber": "5489", "verbatimEventDate": "1960-09-14", "habitat": "Sandy loam on top of natural levee, badly cutover mesquire brush. Lowlands", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Tamaulipas", "county": "", "municipality": "", "locality": "34 miles south of Matamoros on the road to San Fernando; Rio Grande delta", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}