Using CCCC(=O)C1=C(O)CC(c2c(C)cc(C)cc2C)CC1=O, COC(Cl)Cl to produce CCCC(=O)C1=C(O)CC(c2c(C)cc(C)c(C=O)c2C)CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.