Using O=C(O)c1ccc(F)c(F)c1F, CNC(=O)c1ccc(N)c(F)c1 to produce CNC(=O)c1ccc(Nc2c(C(=O)O)ccc(F)c2F)c(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.