1 H NMR ( 400 MHz , CDCl 3 ) δ 7 . 40 - 7 . 28 ( m , 5 H ) , 7 . 04 - 6 . 98 ( m , 1 H ) , 6 . 95 ( d , J = 2 . 0 Hz , 1 H ) , 6 . 87 ( dd , J = 8 . 4 , 2 . 4 Hz , 1 H ) , 5 . 75 및 5 . 71 ( AB q , J = 6 . 4 Hz , 2 H ) , 5 . 18 - 5 . 08 ( m , 2 H ) , 4 . 41 - 4 . 28 ( m , 1 H ) , 4 . 17 ( t , J = 6 . 4 Hz , 2 H ) , 3 . 96 - 3 . 76 ( m , 1 H ) , 3 . 15 - 3 . 03 ( m , 1 H ) , 2 . 72 - 2 . 55 ( m , 2 H ) , 2 . 35 - 2 . 30 ( m , 1 H ) , 1 . 72 - 1 . 44 ( m , 7 H ) , 1 . 41 - 1 . 19 ( m , 6 H ) , 1 . 08 - 0 . 96 ( m , 1 H ) , 0 . 92 ( t , J = 7 . 2 Hz , 3 H ) .