InChI=1S/C21H22O12/c1-7(8-2-4-9(22)5-3-8)13(25)12-10(23)6-11(24)14(26)18(12)32-21-17(29)15(27)16(28)19(33-21)20(30)31/h2-7,15-17,19,21-24,26-29H,1H3,(H,30,31)