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