1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 15 ( d , J = 1 . 2 Hz , 1 H ) , 8 . 01 ( d , J = 1 . 3 Hz , 1 H ) , 7 . 58 ( t , J = 59 . 9 Hz , 1 H ) , 7 . 52 ( d , J = 7 . 9 Hz , 2 H ) , 7 . 38 ( d , J = 8 . 4 Hz , 2 H ) , 6 . 99 ( d , J = 8 . 2 Hz , 2 H ) , 4 . 45 ( s , 1 H ) , 4 . 30 ( s , 1 H ) , 4 . 14 ( s , 0 H ) , 3 . 93 ( d , J = 13 . 2 Hz , 1 H ) , 3 . 71 ( s , 3 H ) , 3 . 66 ( s , 3 H ) , 2 . 92 - 2 . 67 ( m , 4 H ) , 1 . 16 ( s , 3 H ) , 1 . 14 ( s , 3 H ) , 1 . 11 ( s , 3 H ) , 1 . 02 ( s , 3 H ) .