Using CC(=O)c1ccncc1, O=C(C[P+](c1ccccc1)(c1ccccc1)c1ccccc1)OCc1ccccc1 to produce CC(=CC(=O)OCc1ccccc1)c1ccncc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.