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 3-(3-chloro-4-fluorophenyl)-1-[4-(2-piperidin-1-ylpyrimidin-4-yl)piperazin-1-yl]propan-1-one ?
user
C22H27ClFN5O
assistant