Using CC1=C(C#N)C(c2ccc3c(c2)c(NCCN2C(=O)c4ccccc4C2=O)nn3C(=O)OC(C)(C)C)C(C#N)=C(C)N1 to produce CC1=C(C#N)C(c2ccc3[nH]nc(NCCN)c3c2)C(C#N)=C(C)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.