1 H NMR ( 400 MHz , 클로로포름 - d ) δ 10 . 40 ( s , 1 H ) , 8 . 94 - 8 . 79 ( m , 1 H ) , 8 . 04 ( dd , J = 8 . 2 , 2 . 3 Hz , 1 H ) , 7 . 79 ( d , J = 8 . 2 Hz , 1 H ) , 7 . 25 ( d , J = 9 . 3 Hz , 2 H ) , 6 . 70 ( t , J = 55 . 2 Hz , 1 H ) . 19 F NMR ( 377 MHz , 클로로포름 - d ) δ - 113 . 37 ( d , J = 9 . 3 Hz ) , - 116 . 56 ( d , J = 55 . 5 Hz ) .