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