Using CC(=O)O, CCOC(=O)C(Br)c1ccc2oc(-c3ccc(Cl)cc3)nc2c1 to produce COC(=O)C(OC)c1ccc2oc(-c3ccc(Cl)cc3)nc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.