You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-[[2-(4-ethoxy-N-(4-methylphenyl)sulfonylanilino)acetyl]-[(2-methylphenyl)methyl]amino]-N-ethylpropanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H37N3O5S
assistant