Using Cc1ccc(C=O)c(C)c1, O=C(O)CC[P+](c1ccccc1)(c1ccccc1)c1ccccc1 to produce Cc1ccc(C=CCC(=O)O)c(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.