Using Oc1cccc(Br)c1, COc1cccc(Sc2cc(Br)cnc2C#N)c1 to produce COc1cccc(Sc2cc(Oc3cccc(Br)c3)cnc2C#N)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.