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": ""}
        u7(m [leaves thin many of them 5-nerved; wint3r-buds coriaceous. some leavesU /5-nerved, looks likQe p. friesii] - egv59     emmet 83 F   = RUPR.     1933-08-16 *;~     8f  ALISMATALES  x 0 potamogeton friesii    
{"catalogNumber": "", "order": "Alismatales", "family": "", "scientificName": "Potamogeton friesii", "scientificNameAuthorship": "Rupr.", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1933-08-16", "habitat": "", "occurrenceRemarks": "[leaves thin many of them 5-nerved; winter-buds coriaceous. Some leaves 5-nerved, looks like P. friesii] - EGV59", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Emmet", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}