You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[(2,4-dichlorophenyl)methyl]-1-[2-(3,6-dihydro-2H-pyran-4-yl)ethyl]-3-ethylguanidine;hydroiodide by IUPAC nomenclature, provide its molecular formula.
user
C17H24Cl2IN3O
assistant