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": ""}
   RFn 45.50326          10918      SK -83.93503  D%E ROGERS MCVAUGH       koeleria macrantha 2~  Pine-covered dunes in sunny places. abundant N  POALES n!S     (ledeb.) schult. b)t    
{"catalogNumber": "", "order": "Poales", "family": "", "scientificName": "Koeleria macrantha", "scientificNameAuthorship": "(Ledeb.) Schult.", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Rogers McVaugh", "recordNumber": "10918", "verbatimEventDate": "", "habitat": "Pine-covered dunes in sunny places. abundant", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "45.50326", "decimalLongitude": "-83.93503", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}