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