1 H NMR ( 400 MHz , CD 3 OD ) δ 8 . 30 ( s , 1 H ) , 7 . 18 ( d , J = 8 . 4 Hz , 1 H ) , 7 . 05 ( d , J = 2 . 4 Hz , 1 H ) , 6 . 95 ( dd , J = 8 . 4 , 2 . 4 Hz , 1 H ) , 5 . 79 및 5 . 73 ( AB q , J = 6 . 8 Hz , 2 H ) , 3 . 70 - 3 . 67 ( m , 1 H ) , 3 . 32 - 3 . 25 ( m , 1 H ) , 3 . 10 ( dd , J = 13 . 2 , 3 . 2 Hz , 1 H ) , 2 . 96 ( br d , J = 19 . 2 Hz , 1 H ) , 2 . 73 - 2 . 66 ( m , 1 H ) , 2 . 46 ( d , J = 14 . 0 Hz , 1 H ) , 1 . 94 ( d , J = 12 . 4 Hz , 1 H ) , 1 . 87 - 1 . 78 ( m , 1 H ) , 1 . 68 ( d , J = 11 . 2 Hz , 1 H ) , 1 . 60 - 1 . 40 ( m , 5 H ) , 1 . 29 - 1 . 21 ( m , 1 H ) , 1 . 17 ( s , 9 H ) , 1 . 12 - 1 . 06 ( m , 1 H ) .