Using O=C1CCc2c1ccc1nn(Cc3ccccc3)cc21, CCOC(=O)C#N to produce CCOC(=O)C1Cc2c(ccc3nn(Cc4ccccc4)cc23)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.