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": ""}
   CALHOUN dvu C  193808-04 j9      4  # p.h. eschmeyer  E duck lake.         -84.79255 Yn?5R   42.38727 @        RR . trisulca   pX[ 590
{"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "trisulca", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "P.H. Eschmeyer", "recordNumber": "590", "verbatimEventDate": "1938-08-04", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Calhoun", "municipality": "", "locality": "Duck Lake.", "decimalLatitude": "42.38727", "decimalLongitude": "-84.79255", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}