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": ""}
       169 4ary  poales t   9 (WILLD.) BRITTON, STERNS & POGGENB.  $_O=< POACEAE   UNITED STATES UvA+K    &Agn% 1418231    M o q charles h. boynton   tenuiflorCa RBh;1      j  1886 MUHLENBERGIA |2v 
{"catalogNumber": "1418231", "order": "Poales", "family": "Poaceae", "scientificName": "", "scientificNameAuthorship": "(Willd.) Britton, Sterns & Poggenb.", "genus": "Muhlenbergia", "subgenus": "", "specificEpithet": "tenuiflora", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Charles H. Boynton", "recordNumber": "169", "verbatimEventDate": "1886", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}