1 H NMR ( 400 MHz , MeOD ) δ 7 . 69 ( d , J = 2 . 0 Hz , 1 H ) , 7 . 60 ( d , J = 1 . 2 Hz , 1 H ) , 7 . 37 ( d , J = 8 . 8 Hz , 1 H ) , 7 . 22 ( d , J = 1 . 6 , 8 . 4 Hz , 1 H ) , 6 . 86 - 6 . 92 ( m , 2 H ) , 6 . 74 - 6 . 79 ( m , 2 H ) .