[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is under investigation in clinical trial NCT03223753 (Web-Based Physical Activity Intervention in Improving Long Term Health in Children and Adolescents With Newly Diagnosed Acute Lymphoblastic Leukemia in First Remission)."}, {"from": "gpt", "value": "[C][O][P][=Branch1][C][=O][Branch1][C][N][S][C]"}]