Using O=C(Cl)c1ccc(Br)cc1, Cc1cccnc1N[C@@H]1CCCN(C(=O)OC(C)(C)C)C1 to produce Cc1cccnc1N(C(=O)c1ccc(Br)cc1)[C@@H]1CCCN(C(=O)OC(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.