InChI=1/C20H26N4O3/c1-19(2,3)24-17(26)20(16(25)21-18(24)27)11-13-7-5-6-8-14(13)23-10-9-22(4)12-15(20)23/h5-8,15H,9-12H2,1-4H3,(H,21,25,27)/t15-,20-/m1/s1/f/h21H 2159B07DA291509F