1 H NMR ( 400 MHz , 클로로포름 - d ) δ 8 . 05 ( s , 2 H ) , 4 . 74 ( d , J = 6 . 5 Hz , 2 H ) , 3 . 98 - 3 . 69 ( m , 5 H ) , 3 . 26 ( q , J = 7 . 2 Hz , 1 H ) , 3 . 18 ( s , 2 H ) , 1 . 99 ( d , J = 8 . 7 Hz , 1 H ) .