1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ = 8 . 95 ( s , 1 H ) , 8 . 40 ( s , 1 H ) , 8 . 18 ( s , 1 H ) , 8 . 15 ( br s , 1 H ) , 6 . 34 ( d , J = 5 . 5 Hz , 1 H ) , 6 . 31 ( d , J = 6 . 6 Hz , 1 H ) , 5 . 96 - 5 . 68 ( m , 3 H ) , 5 . 40 ( dd , J = 2 . 7 , 51 . 6 Hz , 1 H ) , 4 . 85 ( s , 3 H ) , 4 . 58 ( br d , J = 12 . 1 Hz , 1 H ) , 4 . 49 ( br d , J = 12 . 1 Hz , 1 H ) , 4 . 43 - 4 . 33 ( m , 3 H ) , 4 . 29 ( dd , J = 8 . 6 , 14 . 1 Hz , 1 H ) , 4 . 05 ( dd , J = 4 . 5 , 11 . 9 Hz , 1 H ) , 3 . 95 ( dd , J = 4 . 9 , 12 . 3 Hz , 1 H ) , 3 . 94 - 3 . 86 ( m , 1 H ) , 2 . 67 - 2 . 55 ( m , 1 H ) , 2 . 52 - 2 . 40 ( m , 1 H ) .