Using C[C@@H](c1ccc(Br)cc1)N(CCCC(N)c1ccccc1)C(=O)OC(C)(C)C to produce C[C@H](NCCCC(N)c1ccccc1)c1ccc(Br)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.