InChI=1S/C21H28N2O11/c1-8(2)21(3,20(31)32)23-16(22)11-6-9(4-5-10(11)17(27)28)7-33-19-14(26)12(24)13(25)15(34-19)18(29)30/h4-6,8,12-15,19,24-26H,7H2,1-3H3,(H2,22,23)(H,27,28)(H,29,30)(H,31,32)