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": ""}
1302498 $.=~m    Ceratophyllum demersum : @ o    Y l.  2 UNITED STATES      tz KENT    vC W. EARLE MULLIKEN  ]n demersum  iLd CERATOPHYLLUM      ( ceratophyllaceae      gfd 43.01858  ;f 501 44054  
{"catalogNumber": "1302498", "order": "", "family": "Ceratophyllaceae", "scientificName": "Ceratophyllum demersum", "scientificNameAuthorship": "L.", "genus": "Ceratophyllum", "subgenus": "", "specificEpithet": "demersum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "W. Earle Mulliken", "recordNumber": "501 44054", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Kent", "municipality": "", "locality": "", "decimalLatitude": "43.01858", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}