Using CCCC(CC(=O)OCC)n1c(=O)n(Cc2cc(C#N)c3cccc(C)n23)c2ccccc21 to produce CCCC(CC(=O)O)n1c(=O)n(Cc2cc(C#N)c3cccc(C)n23)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.