1 H NMR ( 400 MHz , 클로로포름 - d ) δ 10 . 01 ( s , 1 H ) , 7 . 97 ( d , J = 8 . 3 Hz , 2 H ) , 7 . 92 - 7 . 86 ( m , 2 H ) , 7 . 50 ( d , J = 2 . 3 Hz , 1 H ) , 6 . 61 ( d , J = 2 . 3 Hz , 1 H ) , 3 . 66 ( tt , J = 7 . 4 , 3 . 8 Hz , 1 H ) , 1 . 22 - 1 . 15 ( m , 2 H ) , 1 . 11 - 1 . 03 ( m , 2 H ) .