Using COC(=O)c1cccc(C=O)c1, c1ccc([P+](Cc2ccccn2)(c2ccccc2)c2ccccc2)cc1 to produce COC(=O)c1cccc(/C=C/c2ccccn2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.