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": ""}
   CE+  Mexico  1965-0V8-29  $$QH      mexico <   Solanum  /v    I$Z solanum nigrescens  nigre5cens  EY#p      A RODRÃ­GUEZ C.      solanaceae `3   Contact UM Herbarium m .8   
{"catalogNumber": "", "order": "", "family": "Solanaceae", "scientificName": "Solanum nigrescens", "scientificNameAuthorship": "", "genus": "Solanum", "subgenus": "", "specificEpithet": "nigrescens", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "A Rodr\u00c3\u00adguez C.", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1965-08-29", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Mexico", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}