Using O=CC1CC1, CC(C)(C)OC(=O)N1CCn2nc(C(F)(F)F)nc2C1 to produce CC(C)(C)OC(=O)N1CCn2nc(C(F)(F)F)nc2C1C(O)C1CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.