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": ""}
  15 -O david castaner cyperaceae  A   19 newmans lake on highway a off highway 67.  B* missouri digitalis  c@j?  1981-06-14      Up VAR. POALES .*d      CAREX DIGITALIS VAR. DIGITALIS ;AqO   6547 Z     1368541  Madison k^Z4%   8 DIGITALIS      $    carex UNITED STATES Yc=z$ 
{"catalogNumber": "1368541", "order": "Poales", "family": "Cyperaceae", "scientificName": "Carex digitalis var. digitalis", "scientificNameAuthorship": "", "genus": "Carex", "subgenus": "", "specificEpithet": "digitalis", "verbatimTaxonRank": "var.", "infraspecificEpithet": "digitalis", "identifiedBy": "", "recordedBy": "David Castaner", "recordNumber": "6547", "verbatimEventDate": "1981-06-14", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Missouri", "county": "Madison", "municipality": "", "locality": "Newmans Lake on highway A off highway 67.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}