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": ""}
     1543384 x>`t     ~ frequent in open spaces  :M<h Esambia  X CROTON LINDHEIMERI   United States GzN2   Malpighiales :5<    b3w G. L. Webster & R. L. Wilbur       # (engelm. & a. gray) engelm. & a. gray ex alph. wood    4. 3571   
{"catalogNumber": "1543384", "order": "Malpighiales", "family": "", "scientificName": "Croton lindheimeri", "scientificNameAuthorship": "(Engelm. & A. Gray) Engelm. & A. Gray ex Alph. Wood", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "G. L. Webster & R. L. Wilbur", "recordNumber": "3571", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "Frequent in open spaces", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Escambia", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}