You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by [4-[1-[2-(dimethylamino)ethyl]imidazol-2-yl]piperidin-1-yl]-(1-ethylpyrazol-3-yl)methanone ?
user
C18H28N6O
assistant