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": ""}
   dr united states    b 1249690  g, psilostachya   m1 B6 829      <V!? Ambrosia psilostachya  s ambrosia  sec.24, t39n r0w (southwest of norway). 3P8l  james sW. pringle E    A -87.953255  michigan /@)   N 45.761561 1967-08-18    qL asteraceae DICKINSON  -T!2   Vb C. 
{"catalogNumber": "1249690", "order": "", "family": "Asteraceae", "scientificName": "Ambrosia psilostachya", "scientificNameAuthorship": "DC.", "genus": "Ambrosia", "subgenus": "", "specificEpithet": "psilostachya", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "James S. Pringle", "recordNumber": "829", "verbatimEventDate": "1967-08-18", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Dickinson", "municipality": "", "locality": "Sec.24, T39N R30W (southwest of Norway).", "decimalLatitude": "45.761561", "decimalLongitude": "-87.953255", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}