Using C[Si](C)(C)CCOCCl, COC(=O)c1cc(-c2ccccc2)[nH]n1 to produce COC(=O)c1cc(-c2ccccc2)n(COCC[Si](C)(C)C)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.