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": ""}
   p. e. berry  hEM    heptalon M+XB$   34 miles south of matamoros on the road to san fernando; rio grande delta ?,EC     ** SANDY LOAM ON TOP OF NATURAL LEVEE, BADLY CUTOVER MESQUIRE BRUSH. LOWLAN+DS  Croton heptalon B 7m~    G 1159379       xKu+ (Kuntze) B.W.van Ee & P.E.Berry   SM~5 5489    D mexico  :G2,  TAMAULIPAS
{"catalogNumber": "1159379", "order": "", "family": "", "scientificName": "Croton heptalon", "scientificNameAuthorship": "(Kuntze) B.W.van Ee & P.E.Berry", "genus": "", "subgenus": "", "specificEpithet": "heptalon", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "P. E. Berry", "recordedBy": "", "recordNumber": "5489", "verbatimEventDate": "", "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": ""}