You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-methylsulfonyl-N-[1-[1-(2,2,2-trifluoroethyl)piperidin-4-yl]ethyl]ethanesulfonamide into molecular formula.
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C12H23F3N2O4S2
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