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": ""}
   R 1541  ) CAREX FLACCOSPERMA       ROBERT F.C. NACZI  7q nV 1987-05-07  lRlk[ poales  Texas        Yt# dewey       1370256    flacgosperma 8J$C    s^l LEON  Ca 6 mi SW of Marquez at rte 79crossing of Navasotaw River, N of rte 79. I]2v 
{"catalogNumber": "1370256", "order": "Poales", "family": "", "scientificName": "Carex flaccosperma", "scientificNameAuthorship": "Dewey", "genus": "", "subgenus": "", "specificEpithet": "flaccosperma", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Robert F.C. Naczi", "recordNumber": "1541", "verbatimEventDate": "1987-05-07", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Texas", "county": "Leon", "municipality": "", "locality": "Ca 6 mi SW of Marquez at rte 79 crossing of Navasota River, N of rte 79.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}