1 H - NMR ( 400 MHz , CDCl 3 ) δ = 1 . 80 - 1 . 87 ( 2 H , m , CH 2 ) , 2 . 56 - 2 . 95 ( 10 H , m , 5 CH 2 ) , 3 . 65 ( 2 H , s , CH 2 ) , 4 . 01 - 4 . 05 ( 3 H , m , CH , CH 2 ) , 6 . 97 - 6 . 99 ( 2 H , d , J = 8 . 5 , Ph ) , 7 . 22 - 7 . 26 ( 1 H , m , Ph ) , 7 . 29 - 7 . 35 ( 4 H , m , Ph ) , 7 . 52 - 7 . 54 ( 2 H , d , J = 8 . 5 , Ph ) .