Using COc1ccc(C=O)cc1OC1CCCC1, Clc1cccc(Cl)c1C[P+](c1ccccc1)(c1ccccc1)c1ccccc1 to produce COc1ccc(/C=C/c2c(Cl)cccc2Cl)cc1OC1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.