1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 74 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 66 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 60 ( s , 1 H ) , 7 . 99 ( d , J = 5 . 1 Hz , 1 H ) , 7 . 86 ( s , 1 H ) , 7 . 21 ( d , J = 5 . 1 Hz , 1 H ) , 4 . 15 ( p , J = 6 . 4 Hz , 1 H ) , 3 . 63 ( s , 2 H ) , 3 . 50 - 3 . 09 ( m , 4 H ) , 2 . 46 - 2 . 19 ( m , 2 H ) , 1 . 40 ( d , J = 6 . 4 Hz , 6 H )