Using ClCc1ccc(Cl)c(Cl)c1, O=C1CC2(C(=O)N1)C(=O)Nc1ccccc12 to produce O=C1CC2(C(=O)N1)C(=O)N(Cc1ccc(Cl)c(Cl)c1)c1ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.