Using O=[N+]([O-])c1ccnc(Cl)c1, O=C(O)c1cnc2ccc(O)cc2c1 to produce O=C(O)c1cnc2ccc(Oc3ccnc(Cl)c3)cc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.