Using NNC(=O)Nc1ccccc1, O=c1c(=NO)c(=O)c2ccccc12 to produce O=C(NN=c1c(=NO)c(=O)c2ccccc12)Nc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.