InChI=1/C18H26N4O/c1-4-6-13-8-12(9-14(7-5-2)16(13)23-3)10-15-11-21-18(20)22-17(15)19/h8-9,11H,4-7,10H2,1-3H3,(H4,19,20,21,22)/f/h19-20H2 3500CDB8A16A7193