Using O=C(O)[C@@H]1CCCC[C@@H]1Nc1cnnc(Cl)c1, NCC(F)(F)F to produce O=C(NCC(F)(F)F)[C@@H]1CCCC[C@@H]1Nc1cnnc(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.