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": ""}
   @&  21.6656     Rancho Delgado; 14 mi N of Tepic, Mirador del Aguila  0   mB  Charles Feddema     Mexico W    -105.041 SY0    # vachellia pennatula     z? [ (Schltdl. & Cham.) Seigler & Ebinger     J.E. Ebinger Q2 H 
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Vachellia pennatula", "scientificNameAuthorship": "(Schltdl. & Cham.) Seigler & Ebinger ", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "J.E. Ebinger", "recordedBy": "Charles Feddema", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "", "municipality": "", "locality": "Rancho Delgado; 14 mi N of Tepic, Mirador del Aguila", "decimalLatitude": "21.6656", "decimalLongitude": "-105.041", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}