You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(2-chloro-6-fluoro-3,5-dimethoxyphenyl)-3-[6-[[5-(2-morpholin-4-ylethyl)pyridin-2-yl]amino]pyrimidin-4-yl]pyrazin-2-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H28ClFN8O3
assistant