1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ = 8 . 70 ( br s , 1 H ) , 8 . 49 ( br s , 1 H ) , 8 . 24 ( br s , 1 H ) , 8 . 10 ( br s , 1 H ) , 6 . 52 - 6 . 26 ( m , 2 H ) , 5 . 94 - 5 . 78 ( m , 2 H ) , 5 . 69 ( br d , J = 54 . 7 Hz , 1 H ) , 5 . 48 - 5 . 26 ( m , 1 H ) , 5 . 14 ( br d , J = 53 . 1 Hz , 2 H ) , 5 . 06 - 4 . 94 ( m , 1 H ) , 4 . 74 - 4 . 19 ( m , 4 H ) , 4 . 10 - 3 . 93 ( m , 2 H ) , 3 . 76 - 3 . 58 ( m , 2 H )