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": ""}
SYMPHYOTRICHUM UROPHYLLUM XMR6    occasional, dry sandy open ground y  1957-08-18 7j@X    1251847 U(N    iS+~Z UROPHYLLUM      M, symphyotrichum MICHIGAN  _    44.63115 afe      5247 Ma   :Qe, ASTERALES  CA. 1 MI SW OF SOUTH BOARDMAN. idYa   wkjm6 United States 
{"catalogNumber": "1251847", "order": "Asterales", "family": "", "scientificName": "Symphyotrichum urophyllum", "scientificNameAuthorship": "", "genus": "Symphyotrichum", "subgenus": "", "specificEpithet": "urophyllum", "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": "ca. 1 mi SW of South Boardman.", "decimalLatitude": "44.63115", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}