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 POLYGONIFOLIUS 18qn   contact um herbarium YHa    s2n Potamogeton   c s.n.   p gustaf tiselius   O SWEDEN  _!, polygonifolius      @ 1880-08-22 no daa H    ^ POTAMOGETONACEAE Pourr. 9  xDp  1702277 KGc#,    -rT VÃ¤RMLAND  M ~  ALISMATALES 
{"catalogNumber": "1702277", "order": "Alismatales", "family": "Potamogetonaceae", "scientificName": "Potamogeton polygonifolius", "scientificNameAuthorship": "Pourr.", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "polygonifolius", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Gustaf Tiselius", "recordNumber": "s.n.", "verbatimEventDate": "1880-08-22", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Sweden", "stateProvince": "V\u00c3\u00a4rmland", "county": "no data", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}