1 H NMR ( 400 MHz , 클로로포름 - d ) δ 8 . 22 ( d , J = 2 . 3 Hz , 1 H ) , 7 . 57 ( dd , J = 8 . 9 , 2 . 4 Hz , 1 H ) , 6 . 30 ( d , J = 9 . 0 Hz , 1 H ) , 4 . 65 ( t , J = 6 . 3 Hz , 2 H ) , 4 . 52 ( t , J = 5 . 8 Hz , 2 H ) , 3 . 70 ( dd , J = 11 . 8 , 2 . 4 Hz , 2 H ) , 3 . 23 - 3 . 08 ( m , 2 H ) , 3 . 04 ( dd , J = 11 . 7 , 2 . 2 Hz , 2 H ) , 1 . 87 - 1 . 70 ( m , 2 H ) , 1 . 63 ( d , J = 7 . 5 Hz , 2 H ) .