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": ""}
  263 Mu+U       , United States  I7o0  Potamogeton epihydrus   wl potamogeton 46.33315   D   L 5 BEATONS LAKE, STA. NO. 1 T45-46N, R40-41W  : 1280410  1937-09-04 S8   raf. F   07> depth of water: 6" bottom: sand  -89.36455 ~<G(   ALISMATALES ^1=  Potamogetonaceae !v5$>   4 gogebic epihydrus n2]M  michigan :C  
{"catalogNumber": "1280410", "order": "Alismatales", "family": "Potamogetonaceae", "scientificName": "Potamogeton epihydrus", "scientificNameAuthorship": "Raf.", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "epihydrus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "263", "verbatimEventDate": "1937-09-04", "habitat": "Depth of Water: 6\" Bottom: sand", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Gogebic", "municipality": "", "locality": "Beatons Lake, Sta. No. 1 T45-46N, R40-41W", "decimalLatitude": "46.33315", "decimalLongitude": "-89.36455", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}