Using CN, O=[N+]([O-])c1cccc(-c2ccc3ccn(-c4cc(Cl)ncn4)c3c2)c1 to produce CNc1cc(-n2ccc3ccc(-c4cccc([N+](=O)[O-])c4)cc32)ncn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.