Using NC(=O)c1c(Nc2cccc(Cl)c2)n[nH]c1N, O=Cc1c[nH]c2c(F)c(F)c(F)c(F)c12 to produce NC(=O)c1c(Nc2cccc(Cl)c2)n[nH]c1NCc1c[nH]c2c(F)c(F)c(F)c(F)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.