1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ = 8 . 88 ( br s , 1 H ) , 8 . 50 ( br s , 1 H ) , 8 . 20 ( br s , 1 H ) , 8 . 12 ( br s , 1 H ) , 6 . 42 - 6 . 17 ( m , 2 H ) , 5 . 84 - 5 . 54 ( m , 1 H ) , 5 . 52 ( d , J = 51 . 6 Hz , 1 H ) , 5 . 06 - 4 . 78 ( m , 2 H ) , 4 . 77 - 4 . 55 ( m , 3 H ) , 4 . 49 ( br d , J = 10 . 2 Hz , 1 H ) , 4 . 42 ( br s , 2 H ) , 4 . 09 - 3 . 77 ( m , 4 H ) .