[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is an antimetabolite that is used in the treatment of cancer and to stimulate fetal hemoglobin production in sickle cell disease. Hydroxyurea is associated with a low rate of transient serum enzyme and bilirubin elevations during therapy, and has been implicated in rare cases of clinically apparent acute liver injury with jaundice."}, {"from": "gpt", "value": "[C][=Branch1][C][=O][Branch1][C][N][N][O]"}]