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": ""}
  Qx  symphyotrichum cordifolium    aM6 CORDIFOLIUM     9% 1935-09-22   4c?]c 1514146  @< -84.341941 (L.) G. L. ;NESOM /F    8624 f   h David Warners MICHIGAN @n/z      ] WOODS. asteraceae ^SL     _aI[a United States  a- 43.665583
{"catalogNumber": "1514146", "order": "", "family": "Asteraceae", "scientificName": "Symphyotrichum cordifolium", "scientificNameAuthorship": "(L.) G. L. Nesom", "genus": "", "subgenus": "", "specificEpithet": "cordifolium", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "David Warners", "recordedBy": "", "recordNumber": "8624", "verbatimEventDate": "1935-09-22", "habitat": "Woods.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "43.665583", "decimalLongitude": "-84.341941", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}