You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]oxyethyl]-1-(2-methoxyphenyl)guanidine;hydroiodide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H17ClF3IN4O2
assistant