Using Cc1c(C(=O)OCc2ccccc2)sc(NC(=O)C(F)(F)F)c1C(=O)O to produce Cc1c(C(=O)OCc2ccccc2)sc(N)c1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.