Using CCOC(=O)C(C)(C)C(O[Si](C)(C)C(C)(C)C)C(C)NC(=O)OCc1ccccc1 to produce CC1NC(=O)C(C)(C)C1O[Si](C)(C)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.