Using Nc1ncccc1OCc1ccccc1, CCOC(=O)CC(=O)c1ccncc1 to produce O=c1cc(-c2ccncc2)nc2c(OCc3ccccc3)cccn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.