Using O=C([O-])[O-], O=C(/C=C/c1ccc(Cl)cc1F)c1ccc(=O)[nH]c1 to produce Cn1cc(C(=O)/C=C/c2ccc(Cl)cc2F)ccc1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.