Showing structure for 6-{7,8-dihydroxy-2-[(3-methoxy-3-oxopropanoyl)oxy]-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-6-yl}-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-2-yl 1-methyl propanedioate