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