Using O=C([O-])[O-], CC(C)(C)OC(=O)N1CCC(C(=O)Nc2ccc(S(C)(=O)=O)cc2I)CC1 to produce CC(C)(C)OC(=O)N1CCC(c2nc3ccc(S(C)(=O)=O)cc3c(=O)o2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.