Using COC[P+](c1ccccc1)(c1ccccc1)c1ccccc1, COc1ccc(-c2nn3ccc(Br)cc3c2C=O)cc1 to produce COC=Cc1c(-c2ccc(OC)cc2)nn2ccc(Br)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.