Using [N-]=[N+]=[N-], CC1(C)OC[C@H](CCOS(C)(=O)=O)O1 to produce CC1(C)OC[C@H](CCN=[N+]=[N-])O1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.