1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 74 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 65 ( d , J = 2 . 1 Hz , 1 H ) , 8 . 49 ( s , 1 H ) , 7 . 98 ( d , J = 5 . 0 Hz , 1 H ) , 7 . 84 ( s , 1 H ) , 7 . 20 ( d , J = 5 . 1 Hz , 1 H ) , 4 . 15 ( p , J = 6 . 4 Hz , 1 H ) , 3 . 54 ( d , J = 6 . 6 Hz , 2 H ) , 2 . 77 ( dt , J = 7 . 6 , 4 . 0 Hz , 1 H ) , 1 . 40 ( d , J = 6 . 4 Hz , 6 H ) , 1 . 36 - 1 . 29 ( m , 1 H ) , 0 . 95 - 0 . 82 ( m , 2 H ) .