Using CC(C)(C)OC(=O)NC1CCNCC1, O=S(=O)(OCC(F)(F)F)C(Cl)(Cl)Cl to produce CC(C)(C)OC(=O)NC1CCN(CC(F)(F)F)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.