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": ""}
 sola nales J   B75 NIGRESCENS   vrFL 1297412 Jalisco A5> T   1949-07-25 A`u &    solanum K>  Mexico y     4  MM Rbert L. Wilbur      <:le Solanum nigrescens      1835 se6b  
{"catalogNumber": "1297412", "order": "Solanales", "family": "", "scientificName": "Solanum nigrescens", "scientificNameAuthorship": "", "genus": "Solanum", "subgenus": "", "specificEpithet": "nigrescens", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Robert L. Wilbur", "recordNumber": "1835", "verbatimEventDate": "1949-07-25", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Jalisco", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}