Using CC(=O)CCCC(C)CCCC(C)CCCC(C)C, [PH3+]C(c1ccccc1)(c1ccccc1)c1ccccc1 to produce C=C(C)CCCC(C)CCCC(C)CCCC(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.