1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ = 8 . 63 ( br s , 2 H ) , 8 . 18 ( br s , 1 H ) , 8 . 17 ( br s , 1 H ) , 6 . 34 ( d , J = 13 . 3 Hz , 1 H ) , 6 . 32 ( d , J = 12 . 9 Hz , 1 H ) , 5 . 86 - 5 . 65 ( m , 2 H ) , 5 . 48 ( d , J = 48 . 5 Hz , 1 H ) , 5 . 35 ( d , J = 43 . 8 Hz , 1 H ) , 4 . 84 - 4 . 53 ( m , 6 H ) , 4 . 47 - 4 . 36 ( m , 2 H ) , 4 . 05 - 3 . 91 ( m , 2 H ) , 3 . 96 - 3 . 85 ( m , 1 H ) , 3 . 70 - 3 . 54 ( m , 1 H ) , 2 . 66 - 2 . 54 ( m , 1 H ) , 2 . 43 - 2 . 30 ( m , 1 H )