You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-bromo-N-[4-(2,4-dioxo-1H-benzo[g][1,5]benzodiazepin-5-yl)phenyl]-N-methylbenzenesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H20BrN3O4S
assistant