Using O=C1CCc2cc(C(=O)N3CCC(=NCc4ccccc4)CC3)ccc2N1 to produce O=C1CCc2cc(C(=O)N3CCC(NCc4ccccc4)CC3)ccc2N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.