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": ""}
 w6@X heteranthera Commelinales U)   3`m 1844-08      196  HETERANTHERA DUBIA  &^   : R& 1489741 F. Rugel `,    french broaRd river om<!   dubia :Te   Tennessee  <#    h united states PONTEDERIACEAE `Em  jefferson s,q       ^k * c im french broad river bei dandridg3 liegt bis an die bGlã»tten im wasser  y] [ (jacq.) macmill. 
{"catalogNumber": "1489741", "order": "Commelinales", "family": "Pontederiaceae", "scientificName": "Heteranthera dubia", "scientificNameAuthorship": "(Jacq.) MacMill.", "genus": "Heteranthera", "subgenus": "", "specificEpithet": "dubia", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "F. Rugel", "recordNumber": "196", "verbatimEventDate": "1844-08", "habitat": "Im French Broad River bei Dandridge liegt bis an die Bl\u00c3\u00bbtten im Wasser", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Tennessee", "county": "Jefferson", "municipality": "", "locality": "French Broad River", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}