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": ""}
solanum nigricans a az  Solanales  JW      [,6 1297437 A RODRÃ­GUEZ C. x   u,-`S rogers mcvaugh       SOLANACEAE  jalisco  L$o-  MEXICO Gz9      F4 M.Martens & Galeotti  es>? solanum    cw1eM CONTACT UM HERBARIUM 1960-11-29    nigrians zS^1    Ri 21518 
{"catalogNumber": "1297437", "order": "Solanales", "family": "Solanaceae", "scientificName": "Solanum nigricans", "scientificNameAuthorship": "M.Martens & Galeotti", "genus": "Solanum", "subgenus": "", "specificEpithet": "nigricans", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "A Rodr\u00c3\u00adguez C.", "recordedBy": "Rogers McVaugh", "recordNumber": "21518", "verbatimEventDate": "1960-11-29", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Jalisco", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}