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": ""}
    | 1990-05-17     xx N UNITED STATES    + cyperaceae flaccosperma #oOG   smith jC  Robert F.C. Naci _O7?  Dewey p      2427 o*   X 1370306  ur Texas  POALES [N]o  CAREX FLACCOOSPERMA  l;W   
{"catalogNumber": "1370306", "order": "Poales", "family": "Cyperaceae", "scientificName": "Carex flaccosperma", "scientificNameAuthorship": "Dewey", "genus": "", "subgenus": "", "specificEpithet": "flaccosperma", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Robert F.C. Naczi", "recordNumber": "2427", "verbatimEventDate": "1990-05-17", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Texas", "county": "Smith", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}