1 H NMR ( 400 MHz , CD 3 OD ) δ 7 . 18 ( d , J = 8 . 4 Hz , 1 H ) , 7 . 05 ( d , J = 2 . 4 Hz , 1 H ) , 6 . 94 ( dd , J = 8 . 4 , 2 . 4 Hz , 1 H ) , 5 . 79 및 5 . 73 ( AB q , J = 6 . 8 Hz , 2 H ) , 4 . 28 ( dd , J = 7 . 6 , 4 . 8 Hz , 1 H ) , 3 . 70 - 3 . 68 ( m , 1 H ) , 3 . 29 - 3 . 25 ( m , 1 H ) , 3 . 14 - 3 . 08 ( m , 1 H ) , 2 . 97 ( br d , J = 19 . 2 Hz , 1 H ) , 2 . 78 ( dd , J = 16 . 0 , 5 . 2 Hz , 1 H ) , 2 . 73 - 2 . 66 ( m , 1 H ) , 2 . 54 - 2 . 44 ( m , 2 H ) , 1 . 95 ( d , J = 12 . 4 Hz , 1 H ) , 1 . 87 - 1 . 78 ( m , 1 H ) , 1 . 72 ( d , J = 13 . 6 Hz , 1 H ) , 1 . 59 - 1 . 42 ( m , 4 H ) , 1 . 34 - 1 . 21 ( m , 2 H ) , 1 . 17 ( s , 9 H ) , 1 . 12 - 1 . 07 ( m , 1 H ) .