Using CC(C)(C)OC(=O)c1cc(Cl)c(F)cc1F, CC1(CO)CCC(F)(F)CC1 to produce CC1(COc2cc(F)c(C(=O)OC(C)(C)C)cc2Cl)CCC(F)(F)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.