You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[2-[[2-(difluoromethyl)-5-[(6-isocyanopyridin-2-yl)methyl]-3-(oxan-2-yl)imidazo[4,5-b]pyridin-7-yl]amino]phenyl]methanesulfonamide into molecular formula.
user
C26H25F2N7O3S
assistant