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": ""}
  1543063 fw  cultivated in medicinal plnt garden S;       vg( SHIU YING HU china F   S tiglium  [BFm5 GUANGDONG   1 CROTON TIGLIUM   ]FB   1981-01-21   13970    small tree, 10m. tall; seed a strong catharitc ld  guangzhdou  _   Kwantung College of Traditional Chinese Medicine ;      u@l   l.
{"catalogNumber": "1543063", "order": "", "family": "", "scientificName": "Croton tiglium", "scientificNameAuthorship": "L.", "genus": "", "subgenus": "", "specificEpithet": "tiglium", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Shiu Ying Hu", "recordNumber": "13970", "verbatimEventDate": "1981-01-21", "habitat": "cultivated in Medicinal plant garden", "occurrenceRemarks": "Small tree, 10m. tall; seed a strong catharitc", "associatedTaxa": "", "country": "China", "stateProvince": "Guangdong", "county": "Guangzhou", "municipality": "", "locality": "Kwantung College of Traditional Chinese Medicine", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}