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 N-ethyl-N'-[2-(3-methylpyridin-4-yl)ethyl]-4-(oxolan-2-ylmethoxy)piperidine-1-carboximidamide;hydroiodide .
user
C21H35IN4O2
assistant