InChI=1S/C21H28N2O11/c1-21(2)18(30)13(26)11-10(34-21)4-3-8(9(25)5-7(22)6-24)12(11)23-19-16(29)14(27)15(28)17(33-19)20(31)32/h3-4,7,14-19,23-24,27-30H,5-6,22H2,1-2H3,(H,31,32)