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": ""}
Helena YO        [ MUHLENBERGIA RICHARDSONIS poales .   U F. D. KELSEY  united states ]      ]P!!M POACEAE  @QR@2 RICHARDSONIS  1891-07-20  P    :gu MUHLENBERGIA    (TRIN.) RYDB. m  S.N. XH%)   1418096 )  Montana Iik/  lewis and clark 6R/I  
{"catalogNumber": "1418096", "order": "Poales", "family": "Poaceae", "scientificName": "Muhlenbergia richardsonis", "scientificNameAuthorship": "(Trin.) Rydb.", "genus": "Muhlenbergia", "subgenus": "", "specificEpithet": "richardsonis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "F. D. Kelsey", "recordNumber": "s.n.", "verbatimEventDate": "1891-07-20", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Montana", "county": "Lewis and Clark", "municipality": "", "locality": "Helena", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}