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": ""}
 vfX! alismatales    spirodela polyrhiza AAT   TuLb2 1662479 leicester   |s    k STAGNANT POOL   united sttes v6  1915-09-08  #d     y)g/ D. LEWIS DUTTON    polyrhiza  Addison ;7Ad    e. landolt lgk     S.N. jBB  VERMONT PK 5 
{"catalogNumber": "1662479", "order": "Alismatales", "family": "", "scientificName": "Spirodela polyrhiza", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "polyrhiza", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "E. Landolt", "recordedBy": "D. Lewis Dutton", "recordNumber": "s.n.", "verbatimEventDate": "1915-09-08", "habitat": "Stagnant pool", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Vermont", "county": "Addison", "municipality": "", "locality": "Leicester", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}