Using CC(C)OC(=O)N1CCC[C@H]1CNc1ccc2ncc(Br)n2n1, CNCCNC to produce CC(C)OC(=O)N1CCC[C@H]1CNc1ccc2ncc(C#N)n2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.