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