You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (2S,3R,4S,5S,6R)-2-[5-amino-2-[(4-methoxyphenyl)methyl]phenoxy]-6-[(1R)-1-hydroxyethyl]oxane-3,4,5-triol ?
user
C21H27NO7
assistant