Using Nc1nc(-c2ccco2)c2nnn(Cc3cccc(CBr)n3)c2n1, [C-]#N to produce N#CCc1cccc(Cn2nnc3c(-c4ccco4)nc(N)nc32)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.