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": ""}
   BQ* JOHN H. EHLERS   UNITED STATES VQ=  [CF. ALSO EHLERS 6271] Gz)   potamogeton j  -84.726972 g*_p   - 1921-08-16  u Do 1281546 45.572947 |V!   3C8(E potamogetonaceae      Potamogeton praelongus H   5:%h cheboygan   R|  MAPLE BAY,5 DOUGLAS LAKE 1779 jN    WULFEN pD 
{"catalogNumber": "1281546", "order": "", "family": "Potamogetonaceae", "scientificName": "Potamogeton praelongus", "scientificNameAuthorship": "Wulfen", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "1779", "verbatimEventDate": "1921-08-16", "habitat": "", "occurrenceRemarks": "[cf. also Ehlers 6271]", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Cheboygan", "municipality": "", "locality": "Maple Bay, Douglas Lake", "decimalLatitude": "45.572947", "decimalLongitude": "-84.726972", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}