InChI=1/C20H26N4O3/c1-16(17-5-3-2-4-6-17)21-19-15-18(7-8-20(19)24(26)27)23-11-9-22(10-12-23)13-14-25/h2-8,15-16,21,25H,9-14H2,1H3/p+1/t16-/m1/s1/fC20H27N4O3/h22H/q+1 741F5350A56344E7