Using O=S(=O)(OCC(F)(F)F)C(F)(F)F, CC(C)(C)n1c(=O)[nH]c2ccc(Cl)cc2c1=O to produce O=c1[nH]c(=O)n(CC(F)(F)F)c2ccc(Cl)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.