InChI=1S/C21H28N2O11/c1-7(2)21(4,20(31)32)23-16(22)10-9(6-5-8(3)11(10)24)18(30)34-19-14(27)12(25)13(26)15(33-19)17(28)29/h5-7,12-15,19,24-27H,1-4H3,(H2,22,23)(H,28,29)(H,31,32)