InChI=1S/C22H16O12/c23-15-16(24)19(20(26)27)34-22(17(15)25)31-7-1-2-8-10(3-7)33-21(28)14-9-4-12-13(30-6-29-12)5-11(9)32-18(8)14/h1-5,15-17,19,22-25H,6H2,(H,26,27)