1 H NMR ( 400 MHz , CDCl 3 ) δ 9 . 03 ( br s , 1 H ) , 7 . 12 ( d , J = 8 . 0 Hz , 1 H ) , 6 . 99 - 6 . 92 ( m , 2 H ) , 5 . 76 및 5 . 71 ( AB q , J = 6 . 8 Hz , 2 H ) , 4 . 13 - 4 . 05 ( m , 2 H ) , 3 . 71 ( m , 1 H ) , 3 . 24 - 3 . 11 ( m , 3 H ) , 2 . 76 ( m , 1 H ) , 2 . 35 ( d , J = 14 . 0 Hz , 1 H ) , 2 . 08 ( d , J = 12 . 4 Hz , 1 H ) , 2 . 00 - 1 . 92 ( m , 1 H ) , 1 . 68 - 1 . 26 ( m , 16 H ) , 1 . 09 - 1 . 00 ( m , 1 H ) , 0 . 89 - 0 . 84 ( m , 6 H ) .