Using NCC(=O)NC(c1ccccc1)c1ccc(Cl)cc1, O=C=NCc1ccccc1 to produce O=C(CNC(=O)NCc1ccccc1)NC(c1ccccc1)c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.