1 H NMR ( 400 MHz , 클로로포름 - d ) δ 7 . 95 ( dd , J = 9 . 5 , 0 . 8 Hz , 1 H ) , 7 . 86 ( dd , J = 8 . 8 , 0 . 8 Hz , 1 H ) , 7 . 38 ( d , J = 8 . 7 Hz , 1 H ) , 7 . 07 ( d , J = 9 . 4 Hz , 1 H ) , 4 . 71 ( t , J = 6 . 2 Hz , 2 H ) , 4 . 58 ( t , J = 5 . 7 Hz , 2 H ) , 4 . 05 ( d , J = 11 . 3 Hz , 2 H ) , 3 . 74 - 3 . 63 ( m , 1 H ) , 3 . 28 - 3 . 20 ( m , 5 H ) , 1 . 86 ( dd , J = 9 . 1 , 4 . 4 Hz , 2 H ) .