Using c1ccc([P+](Cc2ccc3ccccc3n2)(c2ccccc2)c2ccccc2)cc1, COCCOCOc1cccc(C=O)c1 to produce COCCOCOc1cccc(C=Cc2ccc3ccccc3n2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.