You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-[1-(3,4-diethoxyphenyl)ethyl]-3-ethyl-2-[[4-(trifluoromethyl)-1,3-thiazol-2-yl]methyl]guanidine;hydroiodide by IUPAC nomenclature, provide its molecular formula.
user
C20H28F3IN4O2S
assistant