You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-[3-[5-fluoro-2-(3-piperidin-1-ylanilino)pyrimidin-4-yl]-4-methoxyphenyl]but-3-en-2-one .
user
C26H27FN4O2
assistant