Using CC(C)(C)OC(=O)C=Cc1ccc(C=O)cc1, CC(=O)c1ccc(F)c(F)c1 to produce CC(C)(C)OC(=O)C=Cc1ccc(C=CC(=O)c2ccc(F)c(F)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.