Using CC(C)N(NC(=O)OC(C)(C)C)C(=O)c1cn2c(n1)-c1ccc(Br)cc1OCC2 to produce CC(C)N(N)C(=O)c1cn2c(n1)-c1ccc(Br)cc1OCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.