Using C=C(CCC)C(=O)c1ccc(OCCCC(=O)O)c(Cl)c1Cl to produce C=C(CCC)C(=O)c1ccc(OCCCC(=O)[O-])c(Cl)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.