Using COc1cnc(-c2ccc(N)c([N+](=O)[O-])c2)nc1N1CCOCC1 to produce COc1cnc(-c2ccc(N)c(N)c2)nc1N1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.