Using CC(C)(C)OC(=O)N1CCC(O)(CNC(=O)C(F)(F)Br)CC1 to produce CC(C)(C)OC(=O)N1CCC2(CC1)CNC(=O)C(F)(F)O2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.