Musellactone is a lactone that can be isolated from Musella lasiocarpa. Musellactone is an antibiotic, that exhibits antibacterial activity against Bacillus megaterium and Sarcina lutea[1].
References
[1] Qin B, et al. Musellactone, a new lactone from Musella lasiocarpa[J]. Journal of the Chinese Chemical Society, 2006, 53(2): 475-478.