Using N[C@@H]1COC[C@H]1N, CC(C)(C)OC(=O)OC(=O)[O-] to produce CC(C)(C)OC(=O)N[C@@H]1COC[C@H]1N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.