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": ""}
    polyphyllus  7ih@   Nr$BZ MISSOURI    SCIRPUS  . s.n.    M UNITED STATES    w2U SCIRPUS POLYPHYLLUS  = L 1992-09-16  p[kF 1402335     ST. LOUIS, CITY OF E0     Ce  NEAR ST. LOUIS  poales mh3$&   N. M. Glatfelter HC>4  
{"catalogNumber": "1402335", "order": "Poales", "family": "", "scientificName": "Scirpus polyphyllus", "scientificNameAuthorship": "", "genus": "Scirpus", "subgenus": "", "specificEpithet": "polyphyllus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "N. M. Glatfelter", "recordNumber": "s.n.", "verbatimEventDate": "1992-09-16", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Missouri", "county": "St. Louis, City of", "municipality": "", "locality": "near St. Louis", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}