[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is used in the treatment of herpes zoster. Although not approved in the U.S. or Canada, it is approved in several European countries."}, {"from": "gpt", "value": "[C][C@@H1][Branch2][Ring1][N][C@H1][Branch2][Ring1][=Branch1][O][C@H1][Ring1][Branch1][N][C][=C][Branch1][#Branch2][C][=Branch1][C][=O][N][C][Ring1][#Branch1][=O][/C][=C][/Br][C][O][O]"}]