You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(4,5-dimethoxy-2-methylphenyl)methyl]-3-ethyl-1-methyl-2-[3-(oxan-4-ylmethoxy)propyl]guanidine;hydroiodide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H40IN3O4
assistant