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": ""}
  <<Tm (griseb.) horn Charles N. Horn %3<2     8804  p~~    |  1659694 United States >     @hG  Commelinales  multiflora G    T25N, R7E, SEC. 26 h]>      F[  7 HETERANTHERA Butlaer |G   W Pontederiaceae  20<TS NORTH SIDE OF US 60 BETWEEN CO. RT Z AND CO. RT 581. NEXT TO AND IN RICE FIELD. CA. 6 MI ENE OF POPLAR BLUFF   ls& MISSOURI 1994-9-29 ? V@ 
{"catalogNumber": "1659694", "order": "Commelinales", "family": "Pontederiaceae", "scientificName": "", "scientificNameAuthorship": "(Griseb.) Horn", "genus": "Heteranthera", "subgenus": "", "specificEpithet": "multiflora", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles N. Horn", "recordNumber": "8804", "verbatimEventDate": "1994-09-29", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Missouri", "county": "Butler", "municipality": "", "locality": "North side of US 60 between Co. rt Z and Co. rt 581. Next to and in rice field. Ca. 6 mi ENE of Poplar Bluff", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "T25N, R7E, Sec. 26", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}