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": ""}
BILTMORE  5   F #`O s.n.  .v (L.) Mill. 1897-06-14     O buncombe  Fagaceae  m[   CASTANEA r gtn   PUMILA . ]   1537505 S pao    ;XU6 castanea pumila  ^ NOT PRESENT       United States +15uu   north carolina 4H^n  Fagales c V  
{"catalogNumber": "1537505", "order": "Fagales", "family": "Fagaceae", "scientificName": "Castanea pumila", "scientificNameAuthorship": "(L.) Mill.", "genus": "Castanea", "subgenus": "", "specificEpithet": "pumila", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "not present", "recordNumber": "s.n.", "verbatimEventDate": "1897-06-14", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "North Carolina", "county": "Buncombe", "municipality": "", "locality": "Biltmore", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}