1 H - NMR ( 200 MHz ; CDCl 3 ) ; δ 8 . 51 ( 1 H , d ) , 7 . 43 ( 1 H , d ) , 6 . 21 ( 1 H , m ) , 5 . 39 ( 2 H , m ) , 5 . 18 ( m , 1 H ) , 4 . 40 - 4 . 12 ( m , 2 H ) , 4 . 01 ( m , 2 H ) , 2 . 44 ( t , 2 H ) , 2 . 2 - 1 . 9 ( m , 6 H ) , 1 . 8 - 1 . 1 ( m , 22 H ) , 0 . 96 ( t , 3 H ) .