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": ""}
imperfecta ]?H69      #($ poaceae       R melica imperfecta Melica j   1417097 k2 )    CONTACT UM HERBARIUM f 7k1  1921-04-16 v     ?  mary f. spencer  6|Uf riverside  california o|     182 #V   
{"catalogNumber": "1417097", "order": "", "family": "Poaceae", "scientificName": "Melica imperfecta", "scientificNameAuthorship": "", "genus": "Melica", "subgenus": "", "specificEpithet": "imperfecta", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Mary F. Spencer", "recordNumber": "1842", "verbatimEventDate": "1921-04-16", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "California", "county": "Riverside", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}