Using CC(C)(C)n1c(-c2ccccc2-c2n[nH]c(=O)o2)nc2cc(Br)ccc21, CI to produce Cn1nc(-c2ccccc2-c2nc3cc(Br)ccc3n2C(C)(C)C)oc1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.