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