Using COc1nc(C(OC)OC)ccc1CO[Si](c1ccccc1)(c1ccccc1)C(C)(C)C to produce COc1nc(C=O)ccc1CO[Si](c1ccccc1)(c1ccccc1)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.