Using O=C1OC(=Cc2cc(Cl)ccc2[N+](=O)[O-])c2ccccc21 to produce Nc1ccc(Cl)cc1C=C1OC(=O)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.