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 1-[2-[2-(3-chlorophenyl)ethylamino]ethyl]-6-methyl-3-[2-(pyridin-2-ylamino)ethylamino]pyrazin-2-one ?
user
C22H27ClN6O
assistant