Using COC(=O)C(CCC(C)(C)C)N1CC(Oc2ccccc2Cl)=CC1=O to produce CC(C)(C)CCC(C(=O)O)N1CC(Oc2ccccc2Cl)=CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.