Using COC(=O)C(O[Si](C)(C)C(C)(C)C)c1ccc(OC)cc1 to produce COc1ccc(C(C=O)O[Si](C)(C)C(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.