Using CC(C)C(C(N)=O)(c1ccccc1)N1CCCC[C@@H](NC(=O)c2cc3ccccc3[nH]2)C1=O, CC(C)(C)OC(=O)CBr to produce CC(C)C(C(N)=O)(c1ccccc1)N1CCCC[C@@H](NC(=O)c2cc3ccccc3n2CC(=O)O)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.