Using COc1ccc(C(=O)NNC(=O)c2ccc(N)c([N+](=O)[O-])c2)cc1 to produce COc1ccc(-c2nnc(-c3ccc(N)c([N+](=O)[O-])c3)o2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.