InChI=1/C18H19N5/c1-19-17(20-2)23-18-21-15(13-9-5-3-6-10-13)16(22-18)14-11-7-4-8-12-14/h3-12H,1-2H3,(H3,19,20,21,22,23)/f/h19-21H 8C225F742897FBB6