1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 75 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 66 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 58 ( s , 1 H ) , 8 . 00 ( d , J = 5 . 1 Hz , 1 H ) , 7 . 84 ( s , 1 H ) , 7 . 21 ( d , J = 5 . 1 Hz , 1 H ) , 4 . 23 - 4 . 06 ( m , 1 H ) , 3 . 85 ( t , J = 13 . 9 Hz , 2 H ) , 3 . 78 - 3 . 62 ( m , 2 H ) , 2 . 02 ( s , 3 H ) , 1 . 40 ( d , J = 6 . 4 Hz , 6 H ) .