Using CCOC(=O)c1cc(Br)n(-c2ccccc2)c1CBr, CCOC(=O)CNC(=O)OC(C)(C)C to produce CCOC(=O)CN(Cc1c(C(=O)OCC)cc(Br)n1-c1ccccc1)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.