Using CCOC(=O)CBr, COc1ccc(CNC(=O)OCc2ccccc2)cc1O to produce CCOC(=O)COc1cc(CNC(=O)OCc2ccccc2)ccc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.