1 H - NMR ( 400 MHz , CDCl 3 ) δ = 1 . 79 - 1 . 88 ( 2 H , m , CH 2 ) , 2 . 55 - 2 . 94 ( 10 H , m , 5 CH 2 ) , 3 . 64 ( 2 H , s , CH 2 ) , 3 . 99 - 4 . 03 ( 3 H , m , CH , CH 2 ) , 6 . 97 - 6 . 99 ( 2 H , d , J = 8 . 6 , Ph ) , 7 . 21 - 7 . 26 ( 1 H , m , Ph ) , 7 . 28 - 7 . 35 ( 4 H , m , Ph ) , 7 . 52 - 7 . 54 ( 2 H , d , J = 8 . 7 , Ph ) .