Using CC(C)[Si](OS(=O)(=O)C(F)(F)F)(C(C)C)C(C)C, C[C@@H](CBr)CCO to produce CC(C)[Si](OCC[C@@H](C)CBr)(C(C)C)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.