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": ""}
along river on sand S    T LORESTAN WALTER N.KOELZ s   z 1520247 1941-04-12 =F   rr  freym  6>/ > subsericea ONOSMA >1 s  IRAN RwP   B BORAGINALES  dorud CQ   b:x?C 17252  Onosma subsericea c  DORUD, PROVINCE OF LURISTAN R       boraginaceae FL     
{"catalogNumber": "1520247", "order": "Boraginales", "family": "Boraginaceae", "scientificName": "Onosma subsericea", "scientificNameAuthorship": "Freyn", "genus": "Onosma", "subgenus": "", "specificEpithet": "subsericea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "17252", "verbatimEventDate": "1941-04-12", "habitat": "Along river on sand", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Iran", "stateProvince": "Lorestan", "county": "Dorud", "municipality": "", "locality": "Dorud, Province of Luristan", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}