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