Using O, C=Cc1ccn2c(C(=O)Nc3cccc4c3cnn4Cc3ccccc3)cnc2c1 to produce O=C(Nc1cccc2c1cnn2Cc1ccccc1)c1cnc2cc(C(O)CO)ccn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.