Using NNC(N)=O, CC(C)N(CCN1C(=O)C(=O)c2ccccc21)C(C)C to produce CC(C)N(CCN1C(=O)/C(=N/NC(N)=O)c2ccccc21)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.