1 H NMR ( 400 MHz , C 6 D 6 ) δ 8 . 78 - 8 . 74 ( m , 2 H ) , 8 . 50 ( d , J = 1 . 8 Hz , 2 H ) , 7 . 68 - 7 . 62 ( m , 4 H ) , 7 . 57 - 7 . 51 ( m , 4 H ) , 7 . 47 ( dd , J = 8 . 8 , 1 . 9 Hz , 2 H ) , 7 . 13 ( d , J = 2 . 5 Hz , 2 H ) , 7 . 03 - 6 . 94 ( m , 2 H ) , 5 . 34 - 5 . 24 ( m , 2 H ) , 4 . 43 ( d , J = 12 . 2 Hz , 2 H ) , 3 . 38 ( d , J = 12 . 2 Hz , 2 H ) , 1 . 60 - 1 . 50 ( m , 22 H ) , 1 . 37 - 1 . 21 ( m , 30 H ) , 0 . 83 - 0 . 72 ( m , 20 H ) , 0 . 67 - 0 . 55 ( m , 12 H ) , - 0 . 97 ( s , 6 H ) . 19 F { 1 H } NMR ( 376 MHz , C 6 D 6 ) δ - 134 . 45 ( d , J = 22 . 9 Hz , 2 F ) , - 139 . 91 ( d , J = 22 . 7 Hz , 2 F ) .