Using CCOC(=O)CCc1coc2c(O[Si](C)(C)C(C)(C)C)c3ccccc3c(C)c12 to produce Cc1c2ccccc2c(O[Si](C)(C)C(C)(C)C)c2occ(CCC=O)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.