Using COC[PH3+], CCCCCCCCC[C@@H]1OC[C@H](C)[C@H](OC)C1=O to produce CCCCCCCCC[C@@H]1OC[C@H](C)[C@H](OC)C1=COC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.