1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 74 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 65 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 53 ( s , 1 H ) , 7 . 97 ( d , J = 5 . 0 Hz , 1 H ) , 7 . 81 ( s , 1 H ) , 7 . 20 ( d , J = 5 . 1 Hz , 1 H ) , 4 . 44 - 4 . 28 ( m , 1 H ) , 4 . 13 ( 헵트 , J = 6 . 5 Hz , 1 H ) , 2 . 62 - 2 . 48 ( m , 1 H ) , 2 . 37 - 2 . 20 ( m , 2 H ) , 2 . 18 - 1 . 93 ( m , 5 H ) , 1 . 90 - 1 . 78 ( m , 1 H ) , 1 . 39 ( d , J = 6 . 4 Hz , 6 H ) , 1 . 08 ( s , 3 H ) , 1 . 07 ( s , 3 H ) .