You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-(2-chlorophenyl)ethyl]-2-(6,7-dihydro-5H-pyrrolo[2,1-c][1,2,4]triazol-3-ylmethyl)-3-ethylguanidine;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H24ClIN6
assistant