You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-ethyl-8-fluoro-N-[[4-[4-(4-fluorophenyl)piperidin-1-yl]phenyl]methyl]imidazo[1,2-a]pyridine-3-carboxamide .
user
C28H28F2N4O
assistant