InChI=1S/C21H24O12/c1-21(2,20(28)29)17(33-19-14(25)12(23)13(24)16(32-19)18(26)27)11-9(30-3)6-4-8-5-7-10(22)31-15(8)11/h4-7,12-14,16-17,19,23-25H,1-3H3,(H,26,27)(H,28,29)