You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 2-ethyl-N-[4-(4-fluorobenzoyl)piperidin-1-yl]-4-methoxy-N-[2-(trifluoromethyl)phenyl]benzenesulfonamide into molecular formula.
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C28H28F4N2O4S
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