InChI=1/C21H24N2/c1-20(2)10-15-11-21(3,12-20)13-23(15)19-16-8-4-6-14-7-5-9-17(22-19)18(14)16/h4-9,15H,10-13H2,1-3H3/p+1/t15-,21-/m0/s1/fC21H25N2/h22H/q+1 3B498249EA3C4DA2