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 1-[2-fluoro-5-(fluoromethyl)phenyl]-3-[3-[8-(pyridin-4-ylmethoxy)imidazo[1,2-a]pyrazin-6-yl]phenyl]urea .
user
C26H20F2N6O2
assistant