1 H - NMR : δ 7 . 95 ( d , 2 H , J = 8 . 5 ㎐), 7 . 60 - 7 . 56 ( m , 4 H ) , 7 . 49 ( d , 2 H , J = 8 . 5 ㎐), 7 . 46 - 7 . 43 ( m , 2 H ) , 7 . 37 - 7 . 35 ( m , 3 H ) , 4 . 54 ( s , 2 H ) , 4 . 25 ( t , 2 H , J = 4 . 5 ㎐), 3 . 70 ( t , 2 H , J = 4 . 5 ㎐), 3 . 49 ( t , 2 H , J = 7 . 5 ㎐), 3 . 11 ( t , 2 H , J = 7 . 5 ㎐), 1 . 68 - 1 . 60 ( m , 2 H ) , 1 . 49 - 1 . 36 ( m , 4 H ) , 1 . 18 - 1 . 08 ( m , 2 H ) 0 . 98 ( t , 3 H , J = 7 . 3 ㎐), 0 . 78 ( t , 3 H , J = 7 . 3 ㎐)