You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-ethyl-2-[[3-[2-[2-methoxyethyl(methyl)amino]ethoxy]phenyl]methyl]-3-[2-(4-methoxyphenyl)ethyl]guanidine;hydroiodide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H39IN4O3
assistant