Using CCCCCCCCCCCCC(O)c1coc([Si](C)(C)C)c1, O=C(Cl)C1CCCCC1 to produce CCCCCCCCCCCCC(OC(=O)C1CCCCC1)c1coc([Si](C)(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.