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": ""}
   8 SORBUS  @d s.n.     united states  marshall d$D   g S-$ americana  W michigan    % %D) Rosaceae      1955-08-02 A~   Anton A. Reznicek     v 1349085 Sorbus americana |  T46N R17W Sec 30   1ML   8=Z  r.c. van etten  
{"catalogNumber": "1349085", "order": "", "family": "Rosaceae", "scientificName": "Sorbus americana", "scientificNameAuthorship": "Marshall", "genus": "Sorbus", "subgenus": "", "specificEpithet": "americana", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Anton A. Reznicek", "recordedBy": "R.C. Van Etten", "recordNumber": "s.n.", "verbatimEventDate": "1955-08-02", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "T46N R17W Sec 30", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}