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": ""}
 frederick w. case, jr. MzHLl  43.315128 WAQW&      6yo Marshall       betulaceae  &    CORYLUS (  s.n. r7     -84.122165 f (    L/yv Saginaw 1349845 g:/      
{"catalogNumber": "1349845", "order": "", "family": "Betulaceae", "scientificName": "", "scientificNameAuthorship": "Marshall", "genus": "Corylus", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Frederick W. Case, Jr.", "recordNumber": "s.n.", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Saginaw", "municipality": "", "locality": "", "decimalLatitude": "43.315128", "decimalLongitude": "-84.122165", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}