Using CCc1n[nH]c(N)n1, CCOC(=O)CC(=O)c1ccc2c(cnn2C(C)=O)c1 to produce CCc1nc2[nH]c(-c3ccc4c(cnn4C(C)=O)c3)cc(=O)n2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.