Using NC1N=NC(c2cccc(-c3ccccc3)c2)=N1, COC(=O)CC(C(C)=O)C(=O)OC to produce COC(=O)Cc1c(C)nc2nc(-c3cccc(-c4ccccc4)c3)nn2c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.