Using COC(=O)CC1(NS(=O)C(C)(C)C)CC(c2ccccc2)Oc2ccc(Br)cc21 to produce COC(=O)CC1(N)CC(c2ccccc2)Oc2ccc(Br)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.