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": ""}
    -64.4392667  B. VAN EE, P. E. BERRY, & H. ILLARRAGAM ~    031Â°22.771'S 064Â°26.356'W an   2007 -03-19 0l  malpighiales 6G    & 1543780  *W Croton argentinus    ARGENTINUS $E9         6 CÃ³RDOBA  EUPHORBIACEAE 2cU   + MÃ¼LL.ARG.  
{"catalogNumber": "1543780", "order": "Malpighiales", "family": "Euphorbiaceae", "scientificName": "Croton argentinus", "scientificNameAuthorship": "M\u00c3\u00bcll.Arg.", "genus": "", "subgenus": "", "specificEpithet": "argentinus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "B. van Ee, P. E. Berry, & H. Illarraga", "recordNumber": "", "verbatimEventDate": "2007-03-19", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "C\u00c3\u00b3rdoba", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-64.4392667", "verbatimCoordinates": "031\u00c2\u00b022.771'S 064\u00c2\u00b026.356'W", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}