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": ""}
 iu St. Thomas nb  . sessã© & moc.         :V[N 6       1881-06-01  J$-   acalypha 5         W 1666543  .a us virgin island+s 
{"catalogNumber": "1666543", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "Sess\u00c3\u00a9 & Moc.", "genus": "Acalypha", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "6", "verbatimEventDate": "1881-06-01", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "US Virgin Islands", "stateProvince": "", "county": "", "municipality": "", "locality": "St. Thomas nb", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}