You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[1-[N-ethyl-N'-[2-(4-methylpiperidin-1-yl)-2-phenylethyl]carbamimidoyl]piperidin-4-yl]-N-methylacetamide;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H42IN5O
assistant