Using CCCCS, C[C@@H](O[Si](C)(C)C(C)(C)C)[C@H]1C(=O)N[C@@H]1CC(=O)O to produce CCCCSC(=O)C[C@H]1NC(=O)[C@@H]1[C@@H](C)O[Si](C)(C)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.