Using FC(F)C1CCNC1, O=C(NCC1CCC(F)(F)CC1)c1c(Cl)ccc2nc(Cl)ccc12 to produce O=C(NCC1CCC(F)(F)CC1)c1c(Cl)ccc2nc(N3CCC(C(F)F)C3)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.