1-ethyl-3-(2-ethyl-5,6,7,8-tetrahydro-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-2-[[2-(4-methylcyclohexyl)oxypyridin-4-yl]methyl]guanidine;hydroiodide The above is the IUPAC name of a molecule. Write its molecular formula.