InChI=1S/C17H17N3/c1-2-8-13-12(6-1)7-5-11-14(13)18-17-19-15-9-3-4-10-16(15)20-17/h1-4,6,8-10,14H,5,7,11H2,(H2,18,19,20)/t14-/m1/s1