1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 76 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 70 ( d , J = 0 . 8 Hz , 1 H ) , 8 . 66 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 02 ( d , J = 5 . 1 Hz , 1 H ) , 7 . 78 ( s , 1 H ) , 7 . 22 ( d , J = 5 . 1 Hz , 1 H ) , 4 . 43 ( ddd , J = 49 . 1 , 9 . 3 , 2 . 2 Hz , 1 H ) , 4 . 36 - 4 . 26 ( m , 1 H ) , 4 . 16 ( s , 2 H ) , 3 . 93 ( ddd , J = 36 . 2 , 14 . 6 , 2 . 2 Hz , 1 H ) , 3 . 64 - 3 . 49 ( m , 1 H ) , 2 . 62 - 2 . 50 ( m , 2 H ) , 2 . 47 - 2 . 37 ( m , 2 H ) , 2 . 33 - 2 . 19 ( m , 4 H ) , 1 . 30 ( d , J = 1 . 7 Hz , 6 H ) .