Using C[C@@H](c1nc(-c2ccc(C#N)cc2)cs1)[C@@](Cn1cncn1)(OC(=O)OCCl)c1ccc(F)cc1F, [I-] to produce C[C@@H](c1nc(-c2ccc(C#N)cc2)cs1)[C@@](Cn1cncn1)(OC(=O)OCI)c1ccc(F)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.