Using C[Si](C)(C)OCC(=O)O[Si](C)(C)C, CC[Si](Cl)(CC)CC to produce CC[Si](CC)(CC)OC(=CO[Si](C)(C)C)O[Si](C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.