Using CCCCCCC(=O)c1ccc(C(=O)OC)cc1, COC[P+](c1ccccc1)(c1ccccc1)c1ccccc1 to produce CCCCCCC(=COC)c1ccc(C(=O)OC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.