InChI=1S/C20H20N2/c1-2-8-15(9-3-1)14-21-20-16-10-4-6-12-18(16)22-19-13-7-5-11-17(19)20/h1-4,6,8-10,12H,5,7,11,13-14H2,(H,21,22)