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": ""}
s.n. &  purpurea _ b   B ) California not evident z-     KV  United States   V 1893-05-21   O Y Onagraceae GRPM 40306 Y   j Clarkia purpurea     ` (W. CURTIS) A. NELS. & J.F. MACBR.     CLARKIA 5G%   cygaZ fresno  1508879 X  no data provided on label of catalog mo: 141996 AP  myrtales HZ 
{"catalogNumber": "1508879", "order": "Myrtales", "family": "Onagraceae", "scientificName": "Clarkia purpurea", "scientificNameAuthorship": "(W. Curtis) A. Nels. & J.F. Macbr.", "genus": "Clarkia", "subgenus": "", "specificEpithet": "purpurea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Not evident", "recordNumber": "s.n.", "verbatimEventDate": "1893-05-21", "habitat": "", "occurrenceRemarks": "GRPM 40306", "associatedTaxa": "", "country": "United States", "stateProvince": "California", "county": "Fresno", "municipality": "", "locality": "no data provided on label of catalog no: 1413996", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}