Using COC1CCN(S(=O)(=O)c2cc(-c3sc(NC(C)=O)nc3C)c(Br)s2)CC1 to produce COC1CCN(S(=O)(=O)c2cc(-c3sc(NC(C)=O)nc3C)cs2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.