Using CS(=O)(=O)Nc1cc2c(cc1Oc1ccc(F)cc1F)C(=O)CC2 to produce CS(=O)(=O)Nc1cc2c(cc1Oc1ccc(F)cc1F)C(O)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.