Using O=Cc1ccc(F)c(F)c1, CC1(C)OC(=O)c2ccc(O)cc2O1 to produce CC1(C)OC(=O)c2ccc(Oc3ccc(C=O)cc3F)cc2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.