Using CC(O)(c1ccc(N2CCN(S(=O)(=O)c3cccs3)C[C@@H]2COS(C)(=O)=O)cc1)C(F)(F)F to produce CC(O)(c1ccc(N2CCN(S(=O)(=O)c3cccs3)C[C@@H]2CN)cc1)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.