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": ""}
  sturgeon slough, east of chassell r`  epihydrus 4V,C^  HOUGHTON y  RAF.  c    l` shallow water   1948-07-27  v)8a       &9 POTAMOGETON united states ^ n,x   E 5  1153    Y#I? 1280449  [? potamogeton epihydrus michigan Y   CHARLES D. RICHARDS  4o~3  alismatales Tlc=  potamogetonaceae :d3 
{"catalogNumber": "1280449", "order": "Alismatales", "family": "Potamogetonaceae", "scientificName": "Potamogeton epihydrus", "scientificNameAuthorship": "Raf.", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "epihydrus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles D. Richards", "recordNumber": "1153", "verbatimEventDate": "1948-07-27", "habitat": "Shallow water", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Houghton", "municipality": "", "locality": "Sturgeon Slough, east of Chassell", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}