1 H NMR ( 400 MHz , CD 3 OD ) δ 8 . 51 ( s , 1 H ) , 7 . 18 ( d , J = 8 . 4 Hz , 1 H ) , 7 . 03 ( d , J = 2 . 4 Hz , 1 H ) , 6 . 96 ( dd , J = 8 . 4 , 2 . 4 Hz , 1 H ) , 5 . 75 및 5 . 72 ( AB q , J = 6 . 4 Hz , 2 H ) , 4 . 93 - 4 . 82 ( m , 1 H ) , 3 . 69 - 3 . 67 ( m , 1 H ) , 3 . 32 - 3 . 25 ( m , 1 H ) , 3 . 12 - 3 . 07 ( m , 1 H ) , 2 . 97 ( br d , J = 19 . 2 Hz , 1 H ) , 2 . 75 - 2 . 67 ( m , 1 H ) , 2 . 46 ( br d , J = 17 . 2 Hz , 1 H ) , 1 . 96 - 1 . 92 ( m , 1 H ) , 1 . 86 - 1 . 78 ( m , 1 H ) , 1 . 71 ( d , J = 14 . 4 Hz , 1 H ) , 1 . 61 - 1 . 38 ( m , 5 H ) , 1 . 33 - 1 . 29 ( m , 1 H ) , 1 . 26 ( d , J = 6 . 0 Hz , 6 H ) , 1 . 14 - 1 . 04 ( m , 1 H ) .