Using COC(=O)CS(=O)(=O)N(CC(F)F)c1nccnc1C(=O)OC to produce COC(=O)C1=C(O)c2nccnc2N(CC(F)F)S1(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.