1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 75 ( d , J = 2 . 1 Hz , 1 H ) , 8 . 68 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 63 ( s , 1 H ) , 8 . 00 ( d , J = 5 . 1 Hz , 1 H ) , 7 . 78 ( s , 1 H ) , 7 . 21 ( d , J = 5 . 1 Hz , 1 H ) , 4 . 51 - 4 . 31 ( m , 3 H ) , 4 . 24 ( t , J = 6 . 4 Hz , 1 H ) , 3 . 94 ( ddd , J = 36 . 2 , 14 . 6 , 2 . 2 Hz , 1 H ) , 3 . 59 - 3 . 45 ( m , 1 H ) , 3 . 00 ( s , 3 H ) , 2 . 48 ( dd , J = 13 . 0 , 7 . 7 Hz , 2 H ) , 2 . 31 - 2 . 11 ( m , 4 H ) , 2 . 05 ( d , J = 14 . 6 Hz , 2 H ) , 1 . 30 ( d , J = 1 . 7 Hz , 6 H ) .