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": ""}
1543551 :t  CROTON POTTSII VAR. POTTSII m *?    +%| 4383  qz8C United S]tates   %^a4 POTTSII G. L. WEBSTER & K. I. MILLER /   branches erect N   dOq euphorbiaceae     `z CROTON  1952-07-18 Vmu<F   BREWSTER 5Fp-(   B6 pottsii  MALPIGHIALES q2    w+` TEXAS   
{"catalogNumber": "1543551", "order": "Malpighiales", "family": "Euphorbiaceae", "scientificName": "Croton pottsii var. pottsii", "scientificNameAuthorship": "", "genus": "Croton", "subgenus": "", "specificEpithet": "pottsii", "verbatimTaxonRank": "", "infraspecificEpithet": "pottsii", "identifiedBy": "", "recordedBy": "G. L. Webster & K. I. Miller", "recordNumber": "4383", "verbatimEventDate": "1952-07-18", "habitat": "", "occurrenceRemarks": "branches erect", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "Brewster", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}