InChI=1/C20H28N4O/c1-20(15-23-19(21)22,9-10-24-11-13-25-14-12-24)18-8-4-6-16-5-2-3-7-17(16)18/h2-8H,9-15H2,1H3,(H4,21,22,23)/p+2/t20-/m1/s1/fC20H30N4O/h23-24H,21-22H2/q+2 752795BE0A74B3D4