Using CC(C)(C)[Si](C)(C)OCc1cc2ccc(Br)cc2c2ccccc12, C[Sn](C)(C)Cl to produce C[Sn](C)(C)c1ccc2cc(CO)c3ccccc3c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.