InChI=1/C19H18N2/c1-2-6-17(7-3-1)18-11-9-16(10-12-18)14-20-15-19-8-4-5-13-21-19/h1-13,20H,14-15H2/p+1/fC19H19N2/h20H/q+1 BCF7D54293EC2E6C