Using O=C(O)C1CCCN(C(=O)C2CCN(c3ccncc3)CC2)C1, Nc1ccccc1 to produce O=C(Nc1ccccc1)C1CCCN(C(=O)C2CCN(c3ccncc3)CC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.