Using COC(=O)CCC(=O)OC, CC(C)(C)[Si](C)(C)OC1CCC(C=O)CC1 to produce COC(=O)C(=CC1CCC(O[Si](C)(C)C(C)(C)C)CC1)CC(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.