Using COc1cc(Cl)nc(CC(=O)N2CCc3c(F)cccc32)n1 to produce O=C(Cc1nc(Cl)cc(=O)[nH]1)N1CCc2c(F)cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.