You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-[3-cyano-1-ethyl-6-(pyridin-2-ylmethoxy)indol-2-yl]phenyl]ethanesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H24N4O3S
assistant