1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ = 8 . 76 ( br s , 1 H ) , 8 . 44 ( br s , 1 H ) , 8 . 24 ( br s , 1 H ) , 8 . 07 ( br s , 1 H ) , 6 . 45 - 6 . 19 ( m , 2 H ) , 6 . 12 - 5 . 75 ( m , 2 H ) , 5 . 54 ( br d , J = 51 . 6 Hz , 1 H ) , 5 . 67 - 5 . 06 ( m , 2 H ) , 4 . 66 - 4 . 37 ( m , 3 H ) , 4 . 47 - 4 . 37 ( m , 1 H ) , 4 . 36 - 4 . 22 ( m , 2 H ) , 4 . 17 - 3 . 94 ( m , 2 H ) , 3 . 94 - 3 . 80 ( m , 1 H ) 3 . 80 - 3 . 59 ( m , 2 H )