Using COCCOc1ccc(C=O)c([N+](=O)[O-])c1, c1ccc([P+](Cc2n[nH]c3ccccc23)(c2ccccc2)c2ccccc2)cc1 to produce COCCOc1ccc(/C=C/c2n[nH]c3ccccc23)c([N+](=O)[O-])c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.