Using CCCS(=O)(=O)Nc1ccc(F)c(C(=O)c2c[nH]c3ncc(C(=O)OC)cc23)c1F to produce CCCS(=O)(=O)Nc1ccc(F)c(C(=O)c2c[nH]c3ncc(C(=O)O)cc23)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.