Using CS(=O)(=O)CCC(=O)O, CC(C)(C)OC(=O)N1CC(N)C(F)(F)C1 to produce CC(C)(C)OC(=O)N1CC(NC(=O)CCS(C)(=O)=O)C(F)(F)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.