1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ = 9 . 27 ( br s , 1 H ) , 8 . 47 ( br s , 1 H ) , 8 . 21 ( br s , 1 H ) , 8 . 09 ( br s , 1 H ) , 6 . 19 - 5 . 96 ( m , 2 H ) , 5 . 94 - 5 . 71 ( m , 2 H ) , 5 . 13 - 4 . 68 ( m , 2 H ) , 4 . 55 - 4 . 39 ( m , 2 H ) , 4 . 38 - 4 . 23 ( m , 1 H ) , 4 . 20 - 3 . 91 ( m , 5 H ) , 3 . 75 - 3 . 50 ( m , 4 H ) .