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": ""}
Michigan GRL7`  potamogeton Zw`z     r+H 6748      POTAMOGETOZN GRMINEUS )zWi.    united s*tates V        uj 1923-08-29   P [WUD: AUG. 29, 1923, "AT MARINE CITY"]  9. -82.48862    L. ln>    >/u_ 1280931
{"catalogNumber": "1280931", "order": "", "family": "", "scientificName": "Potamogeton gramineus", "scientificNameAuthorship": "L.", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "6748", "verbatimEventDate": "1923-08-29", "habitat": "", "occurrenceRemarks": "[WUD: Aug. 29, 1923, \"at Marine City\"]", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-82.48862", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}