Using COc1ccc(C=O)cc1, COc1cc(O)c(C(C)=O)c(OC)c1 to produce COc1ccc(C=CC(=O)c2c(O)cc(OC)cc2OC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.