Using [O-][I+3]([O-])([O-])[O-], CC1OS(=O)N(C(=O)OC(C)(C)C)C1C to produce CC1OS(=O)(=O)N(C(=O)OC(C)(C)C)C1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.