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": ""}
  449 x E   michigan ~+          E Asterales  2] 46.43105 1251000 #k     u8Y United States  ? -86.443377    lanceolatum g    Symphyotrichum C,t    C pictured rocks national lakeshore on sw side of little chapel lake. sec. 21 t48n r17w  
{"catalogNumber": "1251000", "order": "Asterales", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "Symphyotrichum", "subgenus": "", "specificEpithet": "lanceolatum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "449", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "Pictured Rocks National Lakeshore on SW side of Little Chapel Lake. sec. 21 T48N R17W", "decimalLatitude": "46.543105", "decimalLongitude": "-86.443377", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}