InChI=1S/C21H26N2O10/c1-21(2)6-11(26)13-12(33-21)4-3-9(10(25)5-8(22)7-24)14(13)23-19-17(29)15(27)16(28)18(32-19)20(30)31/h3-4,7-8,15-19,23,27-29H,5-6,22H2,1-2H3,(H,30,31)