You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 5,5,5-trifluoro-4-(5-fluoro-2-methoxyphenyl)-1-[2-fluoro-5-(trifluoromethyl)phenyl]-2,4-dimethylpentan-2-ol ?
user
C21H20F8O2
assistant