Using N[C@@H]1CC[C@H]2CN(S(=O)(=O)c3cccc(C(F)(F)F)c3)C[C@H]21, CC(C)(C)C=O to produce CC(C)(C)CN[C@@H]1CC[C@H]2CN(S(=O)(=O)c3cccc(C(F)(F)F)c3)C[C@H]21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.