Using COC(=O)c1ccc(C=O)cc1, c1ccc([P+](c2ccccc2)(c2ccccc2)C2CC2)cc1 to produce COC(=O)c1ccc(C=C2CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.