You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[3-[[2-[4-(3-ethylpiperazin-1-yl)anilino]pyrrolo[2,3-d]pyrimidin-7-yl]methyl]pyridin-2-yl]-N-methylmethanesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H32N8O2S
assistant