Using CCOC(=O)CBr, Oc1ccc(Cl)c(NCc2cc(-c3cccc(F)c3)ccc2F)c1Cl to produce CCOC(=O)COc1ccc(Cl)c(NCc2cc(-c3cccc(F)c3)ccc2F)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.