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