Using CN(c1ccccc1)c1ccc(NN)nn1, O=C(O)c1cccc(Cl)n1 to produce CN(c1ccccc1)c1ccc(NNC(=O)c2cccc(Cl)n2)nn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.