Using CC(C)(C)OC(=O)N1CCN(C(=O)OC(C)(C)C)[C@@H](c2ccc(Br)cc2)C1 to produce Brc1ccc([C@H]2CNCCN2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.