Using CC(C)(C)[Si](C)(C)Cl, COC(=O)c1ccccc1CNC(=O)CCc1ccc(O)cc1Cl to produce COC(=O)c1ccccc1CNC(=O)CCc1ccc(O[Si](C)(C)C(C)(C)C)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.