Using O=c1c2ccccc2c2nc3ccccn3c2n1-c1ccc(Br)nc1, CC(C)(C)OC(=O)CC#N to produce CC(C)(C)OC(=O)C(C#N)c1ccc(-n2c(=O)c3ccccc3c3nc4ccccn4c32)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.