Using Oc1nncc2ccc(Br)cc12, CC(C)(C)OC(=O)c1ccc(CBr)cc1 to produce CC(C)(C)OC(=O)c1ccc(Cn2ncc3ccc(Br)cc3c2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.