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": ""}
   30.4529 p4     pu 3750  Gq 1940-09-06   s 1123584   rPMi? leptochloa   DUBIA _O  N. SNOW aal     [ callejã³n de san francisco; region of the rã­o bavispe northeastern sonora. horconcitos; arroyo del slto S. WHITE NsNH   Mt (KUNTH) NEES   EwI POACE4E   f% sonora    = leptochloa dubia 
{"catalogNumber": "1123584", "order": "", "family": "Poaceae", "scientificName": "Leptochloa dubia", "scientificNameAuthorship": "(Kunth) Nees", "genus": "Leptochloa", "subgenus": "", "specificEpithet": "dubia", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "N. Snow", "recordedBy": "S. White", "recordNumber": "3750", "verbatimEventDate": "1940-09-06", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Sonora", "county": "", "municipality": "", "locality": "Callej\u00c3\u00b3n de San Francisco; region of the r\u00c3\u00ado Bavispe northeastern sonora. Horconcitos; Arroyo del Salto", "decimalLatitude": "30.4529", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}