Using Nc1cc(F)c(-c2c(F)cccc2F)nc1C(=O)O, Nc1cnccc1Cl to produce Nc1cc(F)c(-c2c(F)cccc2F)nc1C(=O)Nc1cnccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.