1 H NMR ( 400 MHz , CDCl 3 ) δ 9 . 00 ( br , 1 H ) , 7 . 13 ( d , J = 8 . 4 Hz , 1 H ) , 6 . 95 ( d , J = 2 . 8 Hz , 1 H ) , 6 . 92 ( dd , J = 8 . 4 , 2 . 8 Hz , 1 H ) , 5 . 77 및 5 . 73 ( AB q , J = 6 . 4 Hz , 2 H ) , 4 . 00 ( br , 1 H ) , 3 . 67 ( br , 1 H ) , 3 . 24 - 3 . 07 ( m , 3 H ) , 2 . 85 - 2 . 76 ( m , 1 H ) , 2 . 36 ( d , J = 13 . 2 Hz , 2 H ) , 2 . 13 ( s , 3 H ) , 2 . 09 - 2 . 04 ( m , 1 H ) , 1 . 96 - 1 . 88 ( m , 1 H ) , 1 . 68 ( d , J = 12 . 4 Hz , 1 H ) , 1 . 60 - 1 . 37 ( m , 4 H ) , 1 . 31 - 1 . 25 ( m , 1 H ) , 1 . 12 - 1 . 03 ( m , 1 H ) .