InChI=1/C20H19N3O4/c1-9-5-10(2)17-12(6-9)7-13(19(24)23-17)16-14(8-21)18(22)27-11(3)15(16)20(25)26-4/h5-7,16H,22H2,1-4H3,(H,23,24)/t16-/m1/s1/f/h23H	74792756CF13C245