Using CC(C)(C)OC(=O)c1cc2c(s1)CCc1cnc(Nc3cccc(S(N)(=O)=O)c3)nc1-2 to produce CC(C)(C)OC(=O)c1cc2c(ccc3cnc(Nc4cccc(S(N)(=O)=O)c4)nc32)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.