InChI=1S/C23H20O12/c24-11-5-1-9(2-6-11)13-14(25)20(30)23(33,19(13)29)10-3-7-12(8-4-10)34-22-17(28)15(26)16(27)18(35-22)21(31)32/h1-8,13,15-18,22,24,26-28,33H,(H,31,32)