1 H NMR ( 400 MHz , CDCl 3 ) δ 9 . 08 ( br s , 1 H ) , 7 . 12 ( d , J = 8 . 4 Hz , 1 H ) , 6 . 96 - 6 . 92 ( m , 2 H ) , 5 . 76 및 5 . 71 ( AB q , J = 6 . 8 Hz , 2 H ) , 4 . 06 ( d , J = 7 . 2 Hz , 2 H ) , 3 . 68 ( m , 1 H ) , 3 . 22 - 3 . 09 ( m , 3 H ) , 2 . 85 - 2 . 70 ( m , 1 H ) , 2 . 39 - 2 . 30 ( m , 1 H ) , 2 . 28 - 2 . 21 ( m , 1 H ) , 2 . 11 - 2 . 05 ( m , 1 H ) , 1 . 96 - 1 . 89 ( m , 1 H ) , 1 . 79 - 1 . 39 ( m , 12 H ) , 1 . 30 - 1 . 20 ( m , 3 H ) , 1 . 07 - 0 . 98 ( m , 1 H ) .