Using O=C([O-])[O-], CC(C)(C)[Si](C)(C)O[C@@H]1C[C@@H](CC(=O)[O-])C[C@@H](OC2CCCCO2)C1 to produce CC(C)(C)[Si](C)(C)O[C@@H]1C[C@@H](O)C[C@@H](OC2CCCCO2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.