1 H NMR ( 300 MHz , CDCl 3 ) δ 7 . 39 - 7 . 32 ( m , 5 H ) , 7 . 03 ( t , J = 8 . 4 Hz , 1 H ) , 6 . 96 ( s , 1 H ) , 6 . 88 ( dd , J = 8 . 4 , 2 . 4 Hz , 1 H ) , 5 . 75 및 5 . 70 ( AB q , J = 6 . 4 Hz , 2 H ) , 5 . 16 - 5 . 05 ( m , 3 H ) , 4 . 37 ( br d , J = 43 . 2 Hz , 1 H ) , 3 . 96 - 3 . 84 ( m , 1 H ) , 3 . 17 - 3 . 05 ( m , 1 H ) , 2 . 76 - 2 . 56 ( m , 2 H ) , 2 . 32 ( d , J = 10 . 8 Hz , 1 H ) , 1 . 98 - 1 . 51 ( m , 13 H ) , 1 . 50 - 1 . 25 ( m , 4 H ) , 1 . 08 - 0 . 99 ( m , 1 H ) .