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": ""}
     22921 $  MICHOACAN  UTb    &8N cestrum tomentosum mexico $wF.  Rogers McVaugh X4*        tomentosum .U  solanales hr=Zm  1965-03-11 <U       $0 Moc. & SessÃ© ex Dun.   ? M. NEE
{"catalogNumber": "", "order": "Solanales", "family": "", "scientificName": "Cestrum tomentosum", "scientificNameAuthorship": "Moc. & Sess\u00c3\u00a9 ex Dun.", "genus": "", "subgenus": "", "specificEpithet": "tomentosum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "M. Nee", "recordedBy": "Rogers McVaugh", "recordNumber": "22921", "verbatimEventDate": "1965-03-11", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "Michoacan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}