InChI=1S/C21H18O13/c22-8-5-9-10(12(24)11(8)23)13(25)15(27)18(33-9)6-1-3-7(4-2-6)32-21-17(29)14(26)16(28)19(34-21)20(30)31/h1-5,14,16-17,19,21-24,26-29H,(H,30,31)