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": ""}
colorado 2pwQ     rfd6U George E. Osterhout  - clavatum  iG ASTERALES (A.Gray) D.J.Keil :).     > O8 asteraceae    iUH Contact UM Hrbarium  M larimer      1441894 4805 /   Cirsium P    f d americanum   a 1912-08-23   bx:7 VAR.  n C|RSIUM CLAVATUM VAR. AMERICANUM  .PS^@ UNITED STATES
{"catalogNumber": "1441894", "order": "Asterales", "family": "Asteraceae", "scientificName": "Cirsium clavatum var. americanum", "scientificNameAuthorship": "(A.Gray) D.J.Keil", "genus": "Cirsium", "subgenus": "", "specificEpithet": "clavatum", "verbatimTaxonRank": "var.", "infraspecificEpithet": "americanum", "identifiedBy": "", "recordedBy": "George E. Osterhout", "recordNumber": "4805", "verbatimEventDate": "1912-08-23", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Colorado", "county": "Larimer", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}