You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 2-[4-[(Z)-[[2-[(2-bromophenyl)methylsulfanyl]acetyl]hydrazinylidene]methyl]phenoxy]acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H19BrN2O4S
assistant