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": ""}
  mtr D.S. SEIGLER   Y*  Fabales       (SAFF.) SEIGLER & EBINGER 8;   2275 Z .  belize smj4+    t /*o FABACEAE  7r contact um herbarium    * 1148984 Percy H. Gentle Q     1938-03-02  3vS~   vachellia @_~ 
{"catalogNumber": "1148984", "order": "Fabales", "family": "Fabaceae", "scientificName": "", "scientificNameAuthorship": "(Saff.) Seigler & Ebinger", "genus": "Vachellia", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "D.S. Seigler", "recordedBy": "Percy H. Gentle", "recordNumber": "2275", "verbatimEventDate": "1938-03-02", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Belize", "stateProvince": "", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}