Using COC[P+](c1ccccc1)(c1ccccc1)c1ccccc1, CCn1nccc1C(=O)c1cc(Br)cnc1N to produce CCn1nccc1C(=COC)c1cc(Br)cnc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.