Using CCCC(=O)Nc1cccc(N)c1, O=C(O)c1cccc(Cl)c1 to produce CCCC(=O)Nc1cccc(NC(=O)c2cccc(Cl)c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.