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": ""}
  r1 s.n.  R.C. MATTISOM QUDun   ksm44304 b*   u Cornus sericea    :h[ 1894-05-18 -85.668086 ~N  Grand Rapids. @I]   a6S l.    kent Y4A |   ~G CORNUS  K Cornales    1474149 +3gw  michigan h|   aF 42.96336 SERICEA    
{"catalogNumber": "1474149", "order": "Cornales", "family": "", "scientificName": "Cornus sericea", "scientificNameAuthorship": "L.", "genus": "Cornus", "subgenus": "", "specificEpithet": "sericea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "R.C. Mattison", "recordNumber": "s.n.", "verbatimEventDate": "1894-05-18", "habitat": "", "occurrenceRemarks": "KSM44304", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Kent", "municipality": "", "locality": "Grand Rapids.", "decimalLatitude": "42.96336", "decimalLongitude": "-85.668086", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}