Using Cc1ccc(S(=O)(=O)n2c(C3=CCN(S(C)(=O)=O)CC3)cc3c(Br)ccnc32)cc1 to produce CS(=O)(=O)N1CC=C(c2cc3c(Br)ccnc3[nH]2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.