Using ON=Cc1ccccc1, C#Cc1nc(Br)cnc1N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)N(C(=O)OC(C)(C)C)c1ncc(Br)nc1-c1cc(-c2ccccc2)no1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.