1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 76 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 65 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 56 ( s , 1 H ) , 7 . 99 ( d , J = 5 . 1 Hz , 1 H ) , 7 . 90 ( s , 1 H ) , 7 . 22 ( d , J = 5 . 1 Hz , 1 H ) , 4 . 43 ( ddd , J = 49 . 1 , 9 . 2 , 2 . 1 Hz , 1 H ) , 4 . 04 - 3 . 86 ( m , 1 H ) , 3 . 86 - 3 . 75 ( m , 1 H ) , 3 . 69 - 3 . 57 ( m , 1 H ) , 3 . 55 - 3 . 41 ( m , 1 H ) , 2 . 91 ( s , 6 H ) , 2 . 33 - 2 . 16 ( m , 2 H ) , 2 . 12 - 2 . 00 ( m , 2 H ) , 1 . 64 - 1 . 47 ( m , 4 H ) , 1 . 29 ( d , J = 1 . 6 Hz , 6 H ) .