Using C=CCOC(=O)N1C[C@H](O[Si](C)(C)C(C)(C)C)C[C@H]1C=O, Brc1ncc2sccn12 to produce C=CCOC(=O)N1CC(O[Si](C)(C)C(C)(C)C)CC1C(O)c1ncc2sccn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.