1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 75 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 66 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 54 ( s , 1 H ) , 7 . 99 ( d , J = 5 . 0 Hz , 1 H ) , 7 . 84 ( s , 1 H ) , 7 . 21 ( d , J = 5 . 0 Hz , 1 H ) , 4 . 15 ( 헵트 , J = 6 . 9 , 6 . 4 Hz , 1 H ) , 3 . 94 - 3 . 81 ( m , 1 H ) , 3 . 73 - 3 . 58 ( m , 1 H ) , 2 . 11 - 1 . 96 ( m , 4 H ) , 1 . 93 ( s , 3 H ) , 1 . 59 - 1 . 45 ( m , 2 H ) , 1 . 45 - 1 . 36 ( m , 8 H ) .