InChI=1S/C21H16O14/c22-7-3-6-10(14(26)12(7)24)13(25)9-5(11(6)23)1-4(19(30)31)2-8(9)34-21-17(29)15(27)16(28)18(35-21)20(32)33/h1-3,15-18,21-22,24,26-29H,(H,30,31)(H,32,33)