You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(3-bromophenyl)methyl-[2-(4-ethyl-N-methylsulfonylanilino)acetyl]amino]-N-(2-methylpropyl)propanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H34BrN3O4S
assistant