1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 75 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 68 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 55 ( s , 1 H ) , 7 . 98 ( d , J = 5 . 0 Hz , 1 H ) , 7 . 69 ( s , 1 H ) , 7 . 21 ( d , J = 5 . 1 Hz , 1 H ) , 4 . 35 ( dd , J = 9 . 3 , 2 . 1 Hz , 1 H ) , 4 . 26 ( q , J = 7 . 7 Hz , 1 H ) , 4 . 06 - 3 . 83 ( m , 2 H ) , 3 . 61 ( s , 3 H ) , 3 . 58 - 3 . 37 ( m , 1 H ) , 2 . 81 - 2 . 72 ( m , J = 11 . 4 Hz , 1 H ) , 2 . 60 ( ddt , J = 17 . 5 , 11 . 8 , 6 . 7 Hz , 2 H ) , 2 . 35 ( dt , J = 12 . 2 , 6 . 1 Hz , 1 H ) , 2 . 24 - 1 . 96 ( m , 4 H ) , 1 . 28 ( d , J = 1 . 6 Hz , 6 H ) .