Using COc1cc2c(cc1N1CCOCC1)C/C(=C\c1c(F)ccc(Br)c1F)C2=O to produce COc1cc2c(cc1N1CCOCC1)CC(Cc1c(F)cccc1F)C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.