IUPAC:10a,10'a-dimethyl (5S,5'S,6'S,10aR,10'aR)-5'-(acetyloxy)-1,1',5,8,8'-pentahydroxy-3,6'-dimethyl-9,9'-dioxo-5H,5'H,6H,6'H,7H,7'H,9H,9'H,10aH,10'aH-[2,4'-bixanthene]-10a,10'a-dicarboxylate
IUPAC:10a,10'a-dimethyl (5S,5'S,6'S,10aR,10'aR)-5'-(acetyloxy)-1,1',5,8,8'-pentahydroxy-3,6'-dimethyl-9,9'-dioxo-5H,5'H,6H,6'H,7H,7'H,9H,9'H,10aH,10'aH-[2,4'-bixanthene]-10a,10'a-dicarboxylate