Using COC(=O)c1c(OC)nc(C)c([N+](=O)[O-])c1C(=O)OC to produce COC(=O)c1c(OC)nc(C)c(N)c1C(=O)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.