InChI=1S/C21H20O12/c22-7-1-2-9(13-6-11(25)15-10(24)3-8(23)5-14(15)31-13)12(4-7)32-21-18(28)16(26)17(27)19(33-21)20(29)30/h1-5,13,16-19,21-24,26-28H,6H2,(H,29,30)