You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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N-(2-bromo-4,6-difluorophenyl)-1,1,1-trifluoro-N-[(1-methylcyclopropyl)methyl]methanesulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
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C12H11BrF5NO2S
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