1 H NMR ( 400 MHz , CDCl 3 ) δ 7 . 05 ( d , J = 8 . 4 Hz , 1 H ) , 6 . 94 ( d , J = 2 . 4 Hz , 1 H ) , 6 . 83 ( dd , J = 8 . 4 , 2 . 4 Hz , 1 H ) , 5 . 78 및 5 . 73 ( AB q , J = 6 . 4 Hz , 2 H ) , 4 . 01 ( d , J = 9 . 2 Hz , 2 H ) , 3 . 16 - 3 . 08 ( m , 2 H ) , 2 . 80 - 2 . 54 ( m , 4 H ) , 2 . 28 ( d , J = 13 . 2 Hz , 1 H ) , 1 . 81 - 1 . 76 ( m , 1 H ) , 1 . 66 - 1 . 50 ( m , 3 H ) , 1 . 42 - 1 . 26 ( m , 4 H ) , 1 . 20 - 1 . 10 ( m , 1 H ) , 1 . 09 - 1 . 00 ( m , 1 H ) , 0 . 60 ( m , 2 H ) , 0 . 32 ( m , 2 H ) .