Using COc1cc(C=C2C(C)=C(CC(=O)O)c3cc(F)ccc32)cc(OC)c1OC to produce COc1cc(C=C2C(C)=C(CC(=O)[O-])c3cc(F)ccc32)cc(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.