Using CCOC(=O)C(C)(C)N(C)C1CCN(S(C)(=O)=O)CC1 to produce CN(C1CCN(S(C)(=O)=O)CC1)C(C)(C)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.