Using C[P+](c1ccccc1)(c1ccccc1)c1ccccc1, O=C[C@H]1C[C@@H]1c1ccc(Br)cc1 to produce C=C[C@H]1C[C@@H]1c1ccc(Br)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.