Using CC(=O)C=Cc1ccc(Cl)cc1Cl, CCC(CC)(C(=O)[O-])C(=O)[O-] to produce O=C1CC(=O)CC(c2ccc(Cl)cc2Cl)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.