Using COc1cc(C(=O)Nc2ccccc2[N+](=O)[O-])ccc1-c1ccccn1, [N-]=[N+]=[N-] to produce COc1cc(-c2nnnn2-c2ccccc2[N+](=O)[O-])ccc1-c1ccccn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.