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": ""}
   c1w BROMUS     x  1892-05-10 CALIFORNIA o   POALES mIhF  1407928 6fVSK    L. #dE-gQ   s.n. 1W%   hermann e. hase !:| o  bromus rubens c  united states xYm    @w COTACT UM HERBARIUM RUBENS R%(5    oav Los Angeles  
{"catalogNumber": "1407928", "order": "Poales", "family": "", "scientificName": "Bromus rubens", "scientificNameAuthorship": "L.", "genus": "Bromus", "subgenus": "", "specificEpithet": "rubens", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Hermann E. Hasse", "recordNumber": "s.n.", "verbatimEventDate": "1892-05-10", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "California", "county": "Los Angeles", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}