Using Nc1ccc(Br)cc1, CO[C@H](C)[C@@H](C=O)NC(=O)OC(C)(C)C to produce CO[C@H](C)[C@@H](CNc1ccc(Br)cc1)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.