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