You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-[4-(2-methoxy-N-methylsulfonylanilino)butanoyl-[(4-methoxyphenyl)methyl]amino]-N-propylbutanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H39N3O6S
assistant