You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-(2-ethylpiperidin-1-yl)ethyl]-2-methyl-3-[2-(5-pyridin-2-yl-1,2,4-oxadiazol-3-yl)ethyl]guanidine;hydroiodide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H32IN7O
assistant