Using C[N+](=O)[O-], O=Cc1ccc(Cl)c([N+](=O)[O-])c1 to produce O=[N+]([O-])C=Cc1ccc(Cl)c([N+](=O)[O-])c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.