You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-[(3S)-3-(3-chloro-2-methylphenyl)sulfonylpiperidin-3-yl]-3-(trifluoromethyl)benzamide is given. What is its corresponding molecular formula?
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C20H20ClF3N2O3S
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