You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-acetyl-N-[4-[(5-phenyl-1,3,4-oxadiazol-2-yl)methoxy]phenyl]benzenesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H19N3O5S
assistant