Using CCOC(=O)CBr, CC(C)(C)OC(=O)Nc1ccc(O)cc1Cl to produce CCOC(=O)COc1ccc(NC(=O)OC(C)(C)C)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.