1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 76 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 64 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 60 ( s , 1 H ) , 8 . 03 ( d , J = 5 . 0 Hz , 1 H ) , 7 . 87 ( s , 1 H ) , 7 . 22 ( d , J = 5 . 1 Hz , 1 H ) , 4 . 42 ( ddd , J = 49 . 0 , 9 . 3 , 2 . 1 Hz , 1 H ) , 4 . 02 - 3 . 81 ( m , 2 H ) , 3 . 50 ( ddd , J = 16 . 1 , 14 . 5 , 9 . 4 Hz , 1 H ) , 3 . 23 ( tt , J = 11 . 4 , 3 . 6 Hz , 1 H ) , 2 . 34 - 2 . 25 ( m , 2 H ) , 2 . 24 - 2 . 14 ( m , 2 H ) , 1 . 79 - 1 . 54 ( m , 4 H ) , 1 . 29 ( d , J = 1 . 7 Hz , 6 H ) .