Using II, CC(C)(C)OC(=O)n1c(-c2ccc(Cl)c3c2C(=O)NC3)cc2ccccc21 to produce CC(C)(C)OC(=O)n1c(-c2ccc(Cl)c3c2C(=O)NC3)c(I)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.