Using COc1ccc(C(C)=O)cc1, CC(C)(C)c1ccc(C=O)cc1 to produce COc1ccc(C(=O)C=Cc2ccc(C(C)(C)C)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.