You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[6-[[(3-cyanophenyl)-pyridin-3-ylmethyl]-pyridin-3-ylamino]pyridin-2-yl]methanesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H20N6O2S
assistant