Using CC(c1ccccc1-c1ccc(Cl)cc1)N1CCC2(CC1)OCCO2 to produce CC(c1ccccc1-c1ccc(Cl)cc1)N1CCC(=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.