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": ""}
 @ ) walter n. koelz     L  marsh border asterales /!r `  SYMPHYOTRICHUM LANCEOLATUM U   MANITOULINY 0    lrxo Canada    vX6gX GREAT DUCK ISLAND    1932-08-17  1539638  mi8  asteraceae  G   v symphyotrichum  (WILLD.) G. L. NESOM w<cV   d lanceolatum   ?4I ontario  4532 O   
{"catalogNumber": "1539638", "order": "Asterales", "family": "Asteraceae", "scientificName": "Symphyotrichum lanceolatum", "scientificNameAuthorship": "(Willd.) G. L. Nesom", "genus": "Symphyotrichum", "subgenus": "", "specificEpithet": "lanceolatum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "4532", "verbatimEventDate": "1932-08-17", "habitat": "Marsh border", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "Manitoulin", "municipality": "", "locality": "Great Duck Island", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}