Using C=C1CC(=O)OC1=O, Clc1ccc(-c2ccccc2)cc1 to produce C=C(CC(=O)c1ccc(-c2ccc(Cl)cc2)cc1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.