You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-ethyl-1-methyl-2-[2-(3-methylpiperidin-1-yl)ethyl]-1-pent-4-enylguanidine;hydroiodide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H35IN4
assistant