Using N=C(Nc1cccc(N)c1)N1CCCC1, O=C(Cl)c1ccc(Cl)cc1 to produce N=C(Nc1cccc(NC(=O)c2ccc(Cl)cc2)c1)N1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.