You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(3,4-dimethoxyphenyl)methyl]-1-ethyl-3-[(4-methyl-1,2,4-triazol-3-yl)methyl]guanidine;hydroiodide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H25IN6O2
assistant