You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule ethyl 6-[2-[6-[4-[2-(trifluoromethyl)benzoyl]piperazin-1-yl]pyridin-3-yl]ethynyl]pyridine-3-carboxylate ?
user
C27H23F3N4O3
assistant