Using CC(C)(C)OC(=O)n1nnc2cc(CBr)ccc21, Nc1nc(-c2ccco2)c2[nH]nnc2n1 to produce CC(C)(C)OC(=O)n1nnc2cc(Cn3nnc4c(-c5ccco5)nc(N)nc43)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.