Using CC(C)(C)OC(=O)NC1(C(=O)O)CC1C(F)F, NS(=O)(=O)C1CC1 to produce CC(C)(C)OC(=O)NC1(C(=O)NS(=O)(=O)C2CC2)CC1C(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.