Using CCOC(=O)CBr, CCC(O)c1ccc(-c2ccc(Cl)cc2)cc1 to produce CCOC(=O)COC(CC)c1ccc(-c2ccc(Cl)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.