Using COC(=O)c1cc(-c2nnn[nH]2)ccc1OC, O=C([O-])[O-] to produce COC(=O)c1cc(-c2nnn(C)n2)ccc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.