InChI=1/C18H25N5O/c1-18(2,3)16(13-8-5-4-6-9-13)20-17(24)19-12-15-22-21-14-10-7-11-23(14)15/h4-6,8-9,16H,7,10-12H2,1-3H3,(H2,19,20,24)/t16-/m1/s1/f/h19-20H 50F326BF02282ABC