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 (3R,4R,5S,6R)-2-[4-chloro-3-[[4-(2,2,2-trifluoroethoxy)phenyl]methyl]phenyl]-6-(hydroxymethyl)oxane-3,4,5-triol .
user
C21H22ClF3O6
assistant