Using CC(C)(C)OC(=O)N1CCN(Cc2cn(S(=O)(=O)c3ccccc3)c(=O)c3ccc(Br)cc23)CC1 to produce CC(C)(C)OC(=O)N1CCN(Cc2c[nH]c(=O)c3ccc(Br)cc23)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.