Using CN, COC(=O)[C@]1(CC=O)CC[C@H](c2ccc(OCc3ccccc3F)cc2)N1C(=O)OC(C)(C)C to produce CNCC[C@@]1(C(=O)OC)CC[C@H](c2ccc(OCc3ccccc3F)cc2)N1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.