Using NCCCS(=O)(=O)O, Cc1cc(-c2cnc3c(S(C)(=O)=O)cc(Br)nn23)ccc1C(=O)NC1CC1 to produce Cc1cc(-c2cnc3c(NCCCS(=O)(=O)O)cc(Br)nn23)ccc1C(=O)NC1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.