1 H NMR ( 400 MHz , MeOD ) δ 7 . 65 ( dd , J = 1 . 7 , 0 . 7 Hz , 1 H ) , 7 . 43 ( dt , J = 8 . 6 , 0 . 8 Hz , 1 H ) , 7 . 32 ( dd , J = 8 . 6 , 1 . 8 Hz , 1 H ) , 7 . 00 - 6 . 84 ( m , 4 H ) , 6 . 77 ( d , J = 0 . 9 Hz , 1 H ) , 6 . 57 ( ddd , J = 7 . 8 , 2 . 2 , 1 . 2 Hz , 1 H ) , 4 . 66 - 4 . 58 ( m , 3 H ) , 3 . 39 ( d , J = 6 . 9 Hz , 2 H ) , 1 . 11 - 1 . 02 ( m , 1 H ) , 0 . 56 - 0 . 48 ( m , 2 H ) , 0 . 20 ( dt , J = 5 . 9 , 4 . 4 Hz , 2 H ) .