Using Cn1cc(-c2nc(N[C@@H]3CCCC[C@@H]3NC(=O)OC(C)(C)C)c(Br)c3c2C(=O)NC3)cn1 to produce Cn1cc(-c2nc(N[C@@H]3CCCC[C@@H]3N)c(Br)c3c2C(=O)NC3)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.