Using CCC[C@H]1CC[C@H](CCc2c(Cl)nc(-c3ccc(F)c(F)c3)nc2Cl)CC1 to produce CCC[C@H]1CC[C@H](CCc2cnc(-c3ccc(F)c(F)c3)nc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.