Using CC1(C)C(=O)Nc2nc(-c3nc(Cc4ccccc4F)c4ncccn34)nc(N)c21, ICI to produce CC1(C)C(=O)Nc2nc(-c3nc(Cc4ccccc4F)c4ncccn34)nc(I)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.