label: 1,5-dihydroxy-3-methoxy-8-((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl)oxyxanthen-9-one
label_lc: 1,5-dihydroxy-3-methoxy-8-((2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl)oxyxanthen-9-one