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": ""}
Euphorbiaceae Y2H$   FfC Croton     californicus K^JM    californa  $1 x   L 0 coastal sand hills   a 1543163  Presidio y U/  SAN FRANCISCO :5JJ  UNITED STATES   b   1d 1959-06-19   u 59028  Malpighiales a^     ] Lewis S. Rose croton californicus U   
{"catalogNumber": "1543163", "order": "Malpighiales", "family": "Euphorbiaceae", "scientificName": "Croton californicus", "scientificNameAuthorship": "", "genus": "Croton", "subgenus": "", "specificEpithet": "californicus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Lewis S. Rose", "recordNumber": "59028", "verbatimEventDate": "1959-06-19", "habitat": "coastal sand hills", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "California", "county": "San Francisco", "municipality": "", "locality": "Presidio", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}