1 H - NMR ( 400 MHz , CDCl 3 ) δ = 2 . 37 - 2 . 50 ( 4 H , m , 2 CH 2 ) , 2 . 58 - 2 . 61 ( 6 H , m , 3 CH 2 ) , 3 . 02 - 3 . 11 ( 2 H , m , CH 2 ) , 3 . 70 - 3 . 71 ( 2 H , d , J = 2 . 1 , CH 2 ) , 3 . 85 - 3 . 91 ( 1 H , m , CH ) , 6 . 94 - 7 . 01 ( 1 H , m , Ph ) , 7 . 18 - 7 . 20 ( 2 H , m , Ph ) , 7 . 40 - 7 . 42 ( 2 H , d , J = 8 . 3 , Ph ) , 7 . 49 - 7 . 51 ( H , d , J = 8 . 3 , Ph ) .