1 H - NMR ( 400 MHz , CDCl 3 ) δ = 2 . 56 - 2 . 68 ( 4 H , m , 2 CH 2 ) , 2 . 82 - 2 . 87 ( 2 H , m , CH 2 ) , 3 . 20 - 3 . 24 ( 4 H , m , 2 CH 2 ) , 3 . 79 ( 3 H , s , OCH 3 ) , 4 . 04 - 4 . 06 ( 2 H , m , CH 2 ) , 4 . 14 - 4 . 19 ( 1 H , m , CH ) , 6 . 42 - 6 . 44 ( 1 H , dd , J 1 = 8 . 0 , J 2 = 2 . 1 , Ph ) , 6 . 46 - 6 . 47 ( 1 H , t , J = 2 . 2 , Ph ) , 6 . 53 - 6 . 56 ( 1 H , dd , J 1 = 8 . 1 , J 2 = 2 . 2 , Ph ) , 6 . 98 - 7 . 01 ( 2 H , d , J = 8 . 5 , Ph ) , 7 . 16 - 7 . 20 ( 1 H , t , J = 8 . 1 , Ph ) , 7 . 53 - 7 . 56 ( 2 H , d , J = 8 . 6 , Ph ) .