Using Cc1cc(C)n2nc(C[P+](c3ccccc3)(c3ccccc3)c3ccccc3)nc2n1, Cn1nc(Br)nc1C=O to produce Cc1cc(C)n2nc(C=Cc3nc(Br)nn3C)nc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.