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