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": ""}
MICHIGAN X~aN             EP  H asteraceae      S 5247  <l^i 1957-08-18   (D (LINDL. EX DC.) G. L. NESOM  1251 847 l  occasional, dry sandy open ground  .   -85.29417 R)  symphyotrichum urophyllum o)u  United States _@!4= 
{"catalogNumber": "1251847", "order": "", "family": "Asteraceae", "scientificName": "Symphyotrichum urophyllum", "scientificNameAuthorship": "(Lindl. ex DC.) G. L. Nesom", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "5247", "verbatimEventDate": "1957-08-18", "habitat": "occasional, dry sandy open ground", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-85.29417", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}