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": ""}
17060 u     r$7O calendula arvensis       Fq$ M.Bieb. asterales R    t^ ARVENSIS  Quasr-i-Shirin RR    <h FIELDS IRAN ZQ)    mC 7 qasr-e shirin  y)j 1940-12-28   Si z ASTERACEAE  z WALTER N. KOELZ  137995 3+@Lr   Kermanshah GbA=  Calndula oiZ-9 
{"catalogNumber": "1537995", "order": "Asterales", "family": "Asteraceae", "scientificName": "Calendula arvensis", "scientificNameAuthorship": "M.Bieb.", "genus": "Calendula", "subgenus": "", "specificEpithet": "arvensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Walter N. Koelz", "recordNumber": "17060", "verbatimEventDate": "1940-12-28", "habitat": "Fields", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Iran", "stateProvince": "Kermanshah", "county": "Qasr-e Shirin", "municipality": "", "locality": "Quasr-i-Shirin", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}