You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-ethyl-N'-[4-[4-fluoro-3-(trifluoromethyl)phenoxy]-2,5-dimethylphenyl]-N-methylmethanimidamide;methanimidamide .
user
C20H24F4N4O
assistant