Using CCOC(=O)CC(=O)c1ccc2c(c1)OCO2, Nc1nc(Cc2ccccc2)n[nH]1 to produce O=c1cc(-c2ccc3c(c2)OCO3)[nH]c2nc(Cc3ccccc3)nn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.