You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-ethyl-3-[[4-fluoro-2-(trifluoromethyl)phenyl]methyl]-2-[[6-(2-methoxyethoxy)pyridin-3-yl]methyl]guanidine;hydroiodide .
user
C20H25F4IN4O2
assistant