Using O=C(c1nc(C(O)c2cccnc2)c[nH]1)c1cn(Cc2ccc(Cl)cc2)c2ccccc12 to produce O=C(c1cccnc1)c1c[nH]c(C(=O)c2cn(Cc3ccc(Cl)cc3)c3ccccc23)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.