You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-[[(1R)-1-(4-methylphenyl)propyl]amino]-N-(4-pyrrolidin-1-ylsulfonylphenyl)propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H31N3O3S
assistant