Using Cc1ccc(C=O)o1, CCOC(=O)CCC[P+](c1ccccc1)(c1ccccc1)c1ccccc1 to produce CCOC(=O)CC/C=C/c1ccc(C)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.