Using O=C(O)c1ccccc1C(=O)Nc1cnc2c(c1)c(-c1cncs1)cn2S(=O)(=O)c1ccccc1 to produce O=C(O)c1ccccc1C(=O)Nc1cnc2[nH]cc(-c3cncs3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.