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": ""}
    i,KM 15         yt GRAMNEUS Potamogeton AUD)M  FRANCES L. STEARNS 5vWn&    ,Cz^f [ALSO NO. 23, SAME DATE ETC. AND NO. 36 ON AUG 10, 1920 WITH REMAINING DATA THE SAME]    z united states  6GN|W Potamogeton gramineus  >N michigan 1920-08-04 5   L.  Y      1280777 Y 
{"catalogNumber": "1280777", "order": "", "family": "", "scientificName": "Potamogeton gramineus", "scientificNameAuthorship": "L.", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "gramineus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Frances L. Stearns", "recordNumber": "15", "verbatimEventDate": "1920-08-04", "habitat": "", "occurrenceRemarks": "[also No. 23, same date etc. and No. 36 on Aug 10, 1920 with remaining data the same]", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}