InChI=1S/C18H17N3O/c22-18(19-17-11-16(20-21-17)14-7-8-14)10-12-5-6-13-3-1-2-4-15(13)9-12/h1-6,9,11,14H,7-8,10H2,(H2,19,20,21,22)