You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[4-(cyanomethoxy)-2,3-difluorophenyl]-1-methyl-N-[3-methyl-4-[4-[2-(methylamino)acetyl]piperazine-1-carbonyl]phenyl]imidazole-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H29F2N7O4
assistant