1 H NMR ( 400 MHz , MeOD ) δ 7 . 96 - 7 . 87 ( m , 2 H ) , 7 . 71 ( dd , J = 1 . 8 , 0 . 7 Hz , 1 H ) , 7 . 57 - 7 . 43 ( m , 3 H ) , 7 . 45 - 7 . 32 ( m , 2 H ) , 7 . 21 ( d , J = 0 . 9 Hz , 1 H ) , 7 . 02 ( t , J = 8 . 1 Hz , 1 H ) , 6 . 85 ( ddd , J = 7 . 9 , 2 . 1 , 0 . 9 Hz , 1 H ) , 6 . 80 ( t , J = 2 . 1 Hz , 1 H ) , 6 . 58 ( ddd , J = 8 . 1 , 2 . 2 , 0 . 9 Hz , 1 H ) .