You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[[2-(difluoromethoxy)-3-ethoxyphenyl]methyl]-1-ethyl-3-([1,2,4]triazolo[4,3-a]pyridin-3-ylmethyl)guanidine;hydroiodide into its molecular formula.
user
C20H25F2IN6O2
assistant