Using C[Si](C)(C)CCOCn1ccc2c(-c3cnn(C4(CC#N)CC(O)C4)c3)ncnc21 to produce C[Si](C)(C)CCOCn1ccc2c(-c3cnn(C4(CC#N)CC(=O)C4)c3)ncnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.