You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-ethyl-3-[2-(2-methoxyphenoxy)propyl]-2-[(1-methylpyrrol-3-yl)methyl]guanidine;hydroiodide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H29IN4O2
assistant