Using CCOC(=O)C1CC2CC(=O)CC2C1, C[Si](C)(C)OCCO[Si](C)(C)C to produce CCOC(=O)C1CC2CC3(CC2C1)OCCO3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.