1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 76 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 66 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 57 ( s , 1 H ) , 8 . 02 ( d , J = 5 . 1 Hz , 1 H ) , 7 . 87 ( s , 1 H ) , 7 . 22 ( d , J = 5 . 1 Hz , 1 H ) , 4 . 42 ( dd , J = 49 . 0 , 7 . 6 Hz , 1 H ) , 4 . 02 - 3 . 79 ( m , 2 H ) , 3 . 58 - 3 . 41 ( m , 2 H ) , 2 . 99 ( s , 3 H ) , 2 . 30 - 2 . 09 ( m , 4 H ) , 1 . 68 - 1 . 48 ( m , 4 H ) , 1 . 29 ( d , J = 1 . 6 Hz , 6 H ) .