Using Fc1ccc(Br)c(F)c1, CC(C)(C)OC(=O)N1CCC(=O)CC1 to produce CC(C)(C)OC(=O)N1CCC(O)(c2ccc(F)cc2F)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.