InChI=1S/C21H20O12/c1-30-8-2-7-3-11-14(10(23)4-9(6-22)31-11)15(24)13(7)12(5-8)32-21-18(27)16(25)17(26)19(33-21)20(28)29/h2-5,16-19,21-22,24-27H,6H2,1H3,(H,28,29)