1 H NMR ( 400 MHz , CDCl 3 ) δ 9 . 06 ( br , 1 H ) , 7 . 12 ( d , J = 8 . 4 Hz , 1 H ) , 6 . 95 ( d , J = 2 . 4 Hz , 1 H ) , 6 . 92 ( dd , J = 8 . 4 , 2 . 4 Hz , 1 H ) , 5 . 77 및 5 . 74 ( AB q , J = 6 . 4 Hz , 2 H ) , 5 . 39 ( br , 1 H ) , 3 . 66 ( br , 1 H ) , 3 . 23 - 3 . 07 ( m , 3 H ) , 2 . 78 - 2 . 75 ( m , 1 H ) , 2 . 39 - 2 . 34 ( m , 3 H ) , 2 . 05 ( d , J = 12 . 4 Hz , 1 H ) , 1 . 95 - 1 . 87 ( m , 1 H ) , 1 . 77 - 1 . 37 ( m , 13 H ) , 1 . 31 - 1 . 04 ( m , 7 H ) , 0 . 90 - 0 . 82 ( m , 1 H ) .