You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-methyl-1-[3-(2-methylpropoxy)propyl]-3-[(2-phenylmethoxypyridin-4-yl)methyl]guanidine;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H33IN4O2
assistant