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": ""}
 HOWARD S. GENTRY =_f     1( VAR. Contact UM Herbarium `X h)     v)p 1965-04-07 20694 cM]0R        $1/M ANGUSTIFOLIA       agave angustifolia var. letonae  0N   ASPARA#GALES 3@Yr    1 : ASPARAGACEAE 1001393  P@%o 
{"catalogNumber": "1001393", "order": "Asparagales", "family": "Asparagaceae", "scientificName": "Agave angustifolia var. letonae", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "angustifolia", "verbatimTaxonRank": "var.", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Howard S. Gentry", "recordNumber": "20694", "verbatimEventDate": "1965-04-07", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}