Using COC(=O)C(=Cc1ccc(F)cc1)C(C)C(=O)O, CC(=O)[O-] to produce COC(=O)c1cc2ccc(F)cc2c(OC(C)=O)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.