InChI=1S/C23H20O13/c1-31-8-5-10-11(6-2-3-32-22(6)33-10)18-14(8)13-9(4-7(24)12(13)21(30)35-18)34-23-17(27)15(25)16(26)19(36-23)20(28)29/h2-3,5-6,9,15-17,19,22-23,25-27H,4H2,1H3,(H,28,29)