You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl N-[4-[3-(2,6-difluoro-3,5-dimethoxyphenyl)-7-(1,3-dimethylpyrazol-4-yl)-2-oxo-4H-pyrido[4,3-d]pyrimidin-1-yl]phenyl]carbamate is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H26F2N6O5
assistant