1 H NMR ( 400 MHz , 클로로포름 - d ) δ 10 . 54 ( s , 1 H ) , 8 . 74 ( ddd , J = 4 . 8 , 1 . 8 , 0 . 9 Hz , 1 H ) , 8 . 06 ( s , 2 H ) , 7 . 83 ( ddd , J = 8 . 0 , 7 . 4 , 1 . 8 Hz , 1 H ) , 7 . 77 ( dt , J = 8 . 0 , 1 . 1 Hz , 1 H ) , 7 . 36 ( ddd , J = 7 . 4 , 4 . 8 , 1 . 2 Hz , 1 H ) 및 P 25 ( 195 mg , 15 . 2 %).