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