InChI=1S/C23H20O13/c1-31-8-5-9(32-2)13-12(6-8)33-19-14-10(34-22(30)15(13)19)3-7(24)4-11(14)35-23-18(27)16(25)17(26)20(36-23)21(28)29/h3-6,16-18,20,23-27H,1-2H3,(H,28,29)