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