Using COc1ccc(CC(=O)c2ccc(OC)cc2)cc1, COC=CC(=O)OC to produce COC(=O)CC=C(C(=O)c1ccc(OC)cc1)c1ccc(OC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.