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": ""}
 46.26809 @    430 %IM    ~@ZTM DEPTH OF WATER: 5(4-7) FT BOTTOM: PULPY PEA_T   1940-07-31 l%Fp     -87.93086   I.J. CANTRALL  Rx   Tuck. cbrK        C united states     n>#l chain of lakes  P@B POTAMOGETON 
{"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "Tuck.", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "I.J. Cantrall", "recordNumber": "430", "verbatimEventDate": "1940-07-31", "habitat": "Depth of Water: 5(4-7) ft Bottom: pulpy peat", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "Chain of Lakes", "decimalLatitude": "46.26809", "decimalLongitude": "-87.93086", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}