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": ""}
r. c. y. chou  4f    phleum pratense .    y 1420475   <:R~  poales   -nU virginia  + L.  CBP PRATENSE  page 1rm     #Cm.~ PHLEUM   Poaceae Is_K5      . 1945-07-15     appalachian trail to hawksbill mt., sh3nandoah national park 525 EF  
{"catalogNumber": "1420475", "order": "Poales", "family": "Poaceae", "scientificName": "Phleum pratense", "scientificNameAuthorship": "L.", "genus": "Phleum", "subgenus": "", "specificEpithet": "pratense", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "R. C. Y. Chou", "recordNumber": "525", "verbatimEventDate": "1945-07-15", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Virginia", "county": "Page", "municipality": "", "locality": "Appalachian Trail to Hawksbill Mt., Shenandoah National Park", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}