InChI=1S/C21H20O12/c22-9-5-11-12(15(25)14(9)24)13(23)8(6-31-11)7-3-1-2-4-10(7)32-21-18(28)16(26)17(27)19(33-21)20(29)30/h1-5,8,16-19,21-22,24-28H,6H2,(H,29,30)