1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 85 - 8 . 69 ( m , 2 H ) , 8 . 54 ( s , 1 H ) , 8 . 35 ( s , 1 H ) , 7 . 93 ( d , J = 5 . 0 Hz , 1 H ) , 7 . 22 ( d , J = 5 . 1 Hz , 1 H ) , 4 . 40 ( ddd , J = 49 . 1 , 9 . 4 , 2 . 1 Hz , 1 H ) , 3 . 91 ( ddd , J = 36 . 5 , 14 . 5 , 2 . 1 Hz , 1 H ) , 3 . 46 ( ddd , J = 15 . 7 , 14 . 6 , 9 . 4 Hz , 1 H ) , 2 . 79 ( t , J = 4 . 0 Hz , 2 H ) , 2 . 19 ( dt , J = 24 . 1 , 6 . 2 Hz , 12 H ) , 1 . 28 ( d , J = 1 . 7 Hz , 6 H ) .