You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2R)-1-(4-benzylpiperidin-1-yl)-1-oxobutan-2-yl]-N-(4-methylphenyl)methanesulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H32N2O3S
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