Using COC=C(C)c1sc(-c2ccc(C(F)(F)F)cc2)nc1C(C)C to produce CC(C)c1nc(-c2ccc(C(F)(F)F)cc2)sc1C(C)C=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.