Using CCOC(=O)C=C(c1cc(OC)cc(OC)c1)c1ccc(OC)c(OC)c1 to produce COc1cc(OC)cc(C(=CC(=O)O)c2ccc(OC)c(OC)c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.