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-[4-[2-cyclohexyl-2-oxo-1-(1,2,3,4-tetrahydroquinolin-2-yl)ethyl]piperazin-1-yl]pyridine-3-carbonitrile .
user
C27H33N5O
assistant