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": ""}
 Potamogeton obtusifoliu gM    ^ s.n.   s A Mert. & W.D.J. Koch     L!rn schoolcraft -86.146663 H Pvv   z5 1341510 alismatales |d   R. SMITH ^~    l stanley lake, 47-15 sec 11 1952-09-11 jB4^    c potamogeton   43 Potamogetonaceae United States /      x _q obtusifolius  JN michigan 46.483707 @  
{"catalogNumber": "1341510", "order": "Alismatales", "family": "Potamogetonaceae", "scientificName": "Potamogeton obtusifolius", "scientificNameAuthorship": "Mert. & W.D.J. Koch", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "obtusifolius", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "R. Smith", "recordNumber": "s.n.", "verbatimEventDate": "1952-09-11", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Schoolcraft", "municipality": "", "locality": "Stanley Lake, 47-15 Sec 11", "decimalLatitude": "46.483707", "decimalLongitude": "-86.146663", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}