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 (2R,3S,4S,5R,6S)-2-(hydroxymethyl)-6-[4-[[(2S)-oxiran-2-yl]methoxy]phenoxy]oxane-3,4,5-triol .
user
C15H20O8
assistant