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": ""}
   Nf? symphyotrichum 1997-09-30 N     +tj ROBERT W. SMITH  1251894 $ll    p<D (lindl. ex dc.) g. l. nesom   Brighton Hwy. s. of Sports Park Rd.,E Cambridge Twp. T5SR2ES11, se qtr of se qtr cmdJ    TM/G4 37658  x8Zh e. roadside, United States  cD9i      P  -84.15697     *t$ t Lenawee  5 X  42.04932 MICHIGAN G; 
{"catalogNumber": "1251894", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "(Lindl. ex DC.) G. L. Nesom", "genus": "Symphyotrichum", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Robert W. Smith", "recordNumber": "3768", "verbatimEventDate": "1997-09-30", "habitat": "e. roadside,", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Lenawee", "municipality": "", "locality": "Brighton Hwy. s. of Sports Park Rd., Cambridge Twp. T5SR2ES11, se qtr of se qtr", "decimalLatitude": "42.04932", "decimalLongitude": "-84.15697", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}