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-[4-chloro-3-[4-[2-(methylamino)ethyl]piperidine-1-carbonyl]phenyl]imidazolidin-2-one;hydrochloride .
user
C18H26Cl2N4O2
assistant