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