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": ""}
    @[  ANTELOPE CREEK.   F s.n. UNITED STATES J   40=o_ Poaceae  BOUTELOUA GRACILIS t[Fw  gracilis 7 i    RG 1912-09 SOUTH DAKOTA !   MR (KUNTH) LAG. EX GRIFFITHS  Perkins 1b/O   yJ. # bouteloua  poales MJo  1406774 o   William H. Over z$!^N      
{"catalogNumber": "1406774", "order": "Poales", "family": "Poaceae", "scientificName": "Bouteloua gracilis", "scientificNameAuthorship": "(Kunth) Lag. ex Griffiths", "genus": "Bouteloua", "subgenus": "", "specificEpithet": "gracilis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "William H. Over", "recordNumber": "s.n.", "verbatimEventDate": "1912-09", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "South Dakota", "county": "Perkins", "municipality": "", "locality": "Antelope Creek.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}