Using C=C(C)C=O, O=[N+]([O-])c1ccccc1C[P+](c1ccccc1)(c1ccccc1)c1ccccc1 to produce C=C(C)C=Cc1ccccc1[N+](=O)[O-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.