Using COCCNc1ccc2[nH]c(-c3ccc(N)c([N+](=O)[O-])c3)nc2c1 to produce COCCNc1ccc2[nH]c(-c3ccc(N)c(N)c3)nc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.