Using O=C1CNCCN1Cc1ccccc1, CC(C)(C)OC(=O)ON=C(C(N)=O)c1ccccc1 to produce CC(C)(C)OC(=O)N1CCN(Cc2ccccc2)C(=O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.