InChI=1/C17H18N4/c18-16-15-14(12-6-2-1-3-7-12)10-21(13-8-4-5-9-13)17(15)20-11-19-16/h1-3,6-7,10-11,13H,4-5,8-9H2,(H2,18,19,20)/f/h18H2 A70DF34D7F1E26C7