You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-2-[[2-(3,5-dimethyl-N-methylsulfonylanilino)acetyl]-[(4-methoxyphenyl)methyl]amino]-N-methylpropanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H31N3O5S
assistant