Using C[C@H]1[C@H](Nc2ncc(C(F)(F)F)cn2)CCCN1C(=O)OC(C)(C)C to produce C[C@@H]1NCCC[C@H]1Nc1ncc(C(F)(F)F)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.