1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 78 ( d , J = 2 . 1 Hz , 1 H ) , 8 . 69 ( s , 1 H ) , 8 . 64 ( s , 1 H ) , 7 . 99 ( d , J = 5 . 1 Hz , 1 H ) , 7 . 70 ( s , 1 H ) , 7 . 24 ( d , J = 5 . 0 Hz , 1 H ) , 4 . 97 ( t , J = 7 . 5 Hz , 1 H ) , 4 . 72 ( dd , J = 8 . 1 , 5 . 2 Hz , 1 H ) , 4 . 57 - 4 . 36 ( m , 3 H ) , 4 . 07 - 3 . 84 ( m , 2 H ) , 3 . 72 - 3 . 39 ( m , 2 H ) , 3 . 29 ( d , J = 8 . 0 Hz , 2 H ) , 2 . 83 ( d , J = 5 . 3 Hz , 1 H ) , 2 . 67 - 2 . 39 ( m , 4 H ) , 1 . 32 ( d , J = 1 . 6 Hz , 6 H ) .