Using Cc1c(F)c(N)c2c(=O)cc(-c3ccc(NC(=O)C(C)(C)C)c(F)c3)oc2c1F, CCCCCCI to produce CCCCCCNc1c(F)c(C)c(F)c2oc(-c3ccc(NC(=O)C(C)(C)C)c(F)c3)cc(=O)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.