1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 75 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 69 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 59 ( s , 1 H ) , 7 . 99 ( d , J = 5 . 1 Hz , 1 H ) , 7 . 94 ( s , 1 H ) , 7 . 21 ( d , J = 5 . 0 Hz , 1 H ) , 4 . 57 - 4 . 30 ( m , 1 H ) , 4 . 06 - 3 . 83 ( m , 2 H ) , 3 . 62 - 3 . 41 ( m , 1 H ) , 3 . 37 - 3 . 31 ( m , 1 H ) , 2 . 96 ( s , 3 H ) , 2 . 70 ( d , J = 12 . 4 Hz , 1 H ) , 2 . 35 - 2 . 01 ( m , 3 H ) , 1 . 80 - 1 . 41 ( m , 4 H ) , 1 . 28 ( d , J = 1 . 7 Hz , 6 H ) .