Using [I-], COC(=O)[C@H](CCO[Si](C)(C)C(C)(C)C)OS(C)(=O)=O to produce COC(=O)C(I)CCO[Si](C)(C)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.