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 (2S,3R,4S,5S,6S)-2-[4-chloro-2-[[3-(trifluoromethoxy)phenyl]methyl]phenoxy]-6-(hydroxymethyl)thiane-3,4,5-triol .
user
C20H20ClF3O6S
assistant