You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[4-[2-[(2R)-2-methylpyrrolidin-1-yl]ethyl]phenyl]-N-(2-phenylethyl)benzenesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H32N2O2S
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