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