Using CC(=O)C(=O)O, CCOc1cccc(-c2ccc(C=O)cc2)c1 to produce CCOc1cccc(-c2ccc(C=CC(=O)C(=O)O)cc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.