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": ""}
CAHAR MAHAAL AND BAKHTIARI 4      zH  Draba aucheri aucheri 6Jy  walter n. koelz       brassicales YxJ5     17924 (   1941-05-30 V$     limestone cracks _+      _aYBc BRASSICACEAE  
{"catalogNumber": "", "order": "Brassicales", "family": "Brassicaceae", "scientificName": "Draba aucheri", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "aucheri", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "17924", "verbatimEventDate": "1941-05-30", "habitat": "Limestone cracks", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Chahar Mahaal and Bakhtiari", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}