1 H NMR ( 400 MHz , CDCl 3 ) δ 10 . 35 ( br , 1 H ) , 8 . 32 ( br , 1 H ) , 7 . 12 ( d , J = 8 . 4 Hz , 1 H ) , 6 . 94 - 6 . 91 ( m , 2 H ) , 5 . 75 및 5 . 73 ( AB q , J = 6 . 8 Hz , 2 H ) , 3 . 73 ( br , 1 H ) , 3 . 25 - 3 . 19 ( m , 2 H ) , 3 . 04 ( br d , J = 19 . 2 Hz , 1 H ) , 2 . 81 - 2 . 75 ( m , 1 H ) , 2 . 35 ( d , J = 13 . 6 Hz , 1 H ) , 2 . 01 - 1 . 99 ( m , 1 H ) , 1 . 91 - 1 . 85 ( m , 1 H ) , 1 . 70 - 1 . 24 ( m , 8 H ) , 1 . 10 - 1 . 01 ( m , 3 H ) , 0 . 95 - 0 . 90 ( m , 2 H ) .