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