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": ""}
    $,~0 487  s 1973-08-17  _xsW| SALICACEAE    POPULUS 8_]  grandidentata Jb fb    ey  several large trees (ca. 8-10" dbh)   - -86.54028     `x_4= MICHIGAN     d|wX  michx.  United States q$q9X  1317003 qt*mt  
{"catalogNumber": "1317003", "order": "", "family": "Salicaceae", "scientificName": "", "scientificNameAuthorship": "Michx.", "genus": "Populus", "subgenus": "", "specificEpithet": "grandidentata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "487", "verbatimEventDate": "1973-08-17", "habitat": "", "occurrenceRemarks": "Several large trees (ca. 8-10\" DBH)", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-86.54028", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}