Using O=C(Cl)Cc1ccccc1, CC(=O)CNC(C)(C)c1cccc(Cl)c1 to produce CC(=O)CN(C(=O)Cc1ccccc1)C(C)(C)c1cccc(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.