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