Using CC(C)(C)c1ccc(CNC(=O)NCc2ccc(N)c(F)c2)cc1, II to produce CC(C)(C)c1ccc(CNC(=O)NCc2cc(F)c(N)c(I)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.