1 H - NMR ( 200 MHz ; CDCl 3 ) ; δ 7 . 74 ( d , 1 H ) , 6 . 27 ( m , 1 H ) , 5 . 87 ( d , 1 H ) , 5 . 40 ( m , 2 H ) , 5 . 22 ( m , 1 H ) , 4 . 6 - 4 . 2 ( m , 4 H ) , 2 . 42 ( t , 2 H ) , 2 . 00 ( m , 4 H ) , 1 . 65 ( m , 2 H ) , 1 . 5 - 1 . 2 ( m , 22 H ) , 0 . 87 ( t , 3 H ) .