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system
Name the molecular formula for the molecule established as 6-fluoro-2-methyl-3-[[(1R,5S)-1,3,3-trimethyl-6-azoniabicyclo[3.2.1]octan-6-yl]methyl]-1H-quinolin-4-one using the IUPAC nomenclature.
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C21H28FN2O+
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