Using COC(=O)C12CC3CC(CC(N)(C3)C1)C2, O=C(O)c1cccc(Cl)c1 to produce COC(=O)C12CC3CC(CC(NC(=O)c4cccc(Cl)c4)(C3)C1)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.