You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-[2-[2-[2-(1H-indol-3-yl)acetyl]hydrazinyl]-2-oxoethyl]phenyl]naphthalene-2-sulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H24N4O4S
assistant