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": ""}
      pEU/l 46.638184  Ceratophyllales q|  Scarce (only these fragments seen, drifting) KW_]  1302493 *I~FC     1 A. GRAY 1973-08-19   I  Alger S?OF      & CERATOPHYLLUM ECHINATUM     EDWARD G. VOSS BPw    
{"catalogNumber": "1302493", "order": "Ceratophyllales", "family": "", "scientificName": "Ceratophyllum echinatum", "scientificNameAuthorship": "A. Gray", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Edward G. Voss", "recordNumber": "", "verbatimEventDate": "1973-08-19", "habitat": "Scarce (only these fragments seen, drifting)", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Alger", "municipality": "", "locality": "", "decimalLatitude": "46.638184", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}