1 H NMR ( 400 MHz , CDCl 3 ) δ 9 . 33 ( br s , 1 H ) , 7 . 12 ( d , J = 8 . 0 Hz , 1 H ) , 6 . 89 - 6 . 89 ( m , 2 H ) , 5 . 77 및 5 . 72 ( AB q , J = 6 . 8 Hz , 2 H ) , 4 . 86 - 4 . 78 ( m , 1 H ) , 3 . 61 ( m , 1 H ) , 3 . 22 - 3 . 02 ( m , 3 H ) , 2 . 75 ( m , 1 H ) , 2 . 35 ( d , J = 14 . 0 Hz , 1 H ) , 2 . 20 - 2 . 06 ( m , 3 H ) , 1 . 98 - 1 . 87 ( m , 1 H ) , 1 . 70 - 1 . 33 ( m , 8 H ) , 1 . 27 ( d , J = 6 . 4 Hz , 3 H ) , 1 . 25 - 1 . 23 ( m , 1 H ) , 1 . 11 - 0 . 95 ( m , 1 H ) , 0 . 91 ( t , J = 7 . 2 Hz , 3 H ) .