Using COC(=O)c1ccc(O)c(Cl)c1, O=Cc1cc(Br)ccc1F to produce COC(=O)c1ccc(Oc2ccc(Br)cc2C=O)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.