[{"from": "human", "value": "Please give me some details about this molecule. [C][C][=Branch1][C][=O][N][C][C][=C][C][=Branch1][C][=O][O][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a mycotoxin found in various species of fungi of the genus Fusarium. It can often be found in contaminated agricultural products. Butenolide had been implicated as the causative agent of a livestock mycotoxicosis called \u201cfescue foot\u201d, a peripheral vascular disorder occurring in cattle grazing on tall fescue grass. Butenolide is also one of the mycotoxins which have been considered as a suspected etiological factor for Kaschin-Beck disease (an endemic osteoarthropathy) and Keshan disease (an endemic cardiomyopathy), prevailing in some regions of China, and several studies have also indicated that butenolide can cause cartilage damage. (A3036, A3039)"}]