You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2R)-2-[[2-(4-ethoxy-N-(4-methylsulfanylphenyl)sulfonylanilino)acetyl]-(2-phenylethyl)amino]-N-propan-2-ylpropanamide .
user
C31H39N3O5S2
assistant