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 (2R,3R,4R,5S)-2-[[5,7-dihydroxy-2-(4-hydroxy-3,5-dimethoxyphenyl)-2H-chromen-3-yl]oxy]oxane-3,4,5-triol ?
user
C22H24O11
assistant