1 H NMR ( 400 MHz , CDCl 3 ) δ 7 . 39 - 7 . 31 ( m , 5 H ) , 7 . 05 - 7 . 01 ( m , 1 H ) , 6 . 96 ( s , 1 H ) , 6 . 87 ( dd , J = 8 . 4 , 2 . 4 Hz , 1 H ) , 5 . 78 및 5 . 73 ( AB q , J = 6 . 4 Hz , 2 H ) , 5 . 17 - 5 . 12 ( m , 1 H ) , 4 . 42 - 4 . 31 ( m , 1 H ) , 3 . 96 - 3 . 84 ( m , 1 H ) , 3 . 83 ( s , 3 H ) , 3 . 14 - 3 . 05 ( m , 1 H ) , 2 . 77 - 2 . 56 ( m , 1 H ) , 2 . 35 - 2 . 32 ( m , 1 H ) , 1 . 72 - 1 . 46 ( m , 6 H ) , 1 . 42 - 1 . 21 ( m , 5 H ) , 1 . 09 - 0 . 90 ( m , 1 H ) .