[{"from": "human", "value": "Provide a description of this molecule. [C][C@H1][Branch1][S][C@@H1][C@H1][Branch1][Ring2][O][Ring1][Branch1][C@H1][Branch1][Branch1][C][O][Ring1][=Branch1][O][O]"}, {"from": "gpt", "value": "The molecule has since been discontinued. Currently, isosorbide is an organic nitrate currently available in the [isosorbide mononitrate] and [isosorbide dinitrate] forms, and is used for the prevention of angina. Refer to these drug entries for more information."}]