Using Fc1cnc(Cl)nc1Cl, COC(=O)C1(C)CCCC(NC(=O)OC(C)(C)C)C1 to produce COC(=O)[C@]1(C)CCC[C@H](Nc2nc(Cl)ncc2F)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.