InChI=1S/C23H20O13/c1-31-13-3-7-11(6-14(13)32-2)33-19-8-4-12(9(24)5-10(8)34-22(30)15(7)19)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)