InChI=1S/C21H18O12/c22-7-3-12(24)14-13(4-7)31-6-10(15(14)25)9-2-1-8(5-11(9)23)32-21-18(28)16(26)17(27)19(33-21)20(29)30/h1-6,16-19,21-24,26-28H,(H,29,30)