The molecule is a 19-membered cyclodepsipeptide isolated from Floridian marine cyanobacterium Lyngbya sp. It exhibits inhibitory activity towards the enzymes elastase and chymotrypsin. It has a role as a metabolite, a serine protease inhibitor and an EC 3.4.21.1 (chymotrypsin) inhibitor. It is a cyclodepsipeptide and a macrocycle.
(2S)-1-acetyl-N-[(2S,3R)-1-[[(2S,5S,8S,11R,12S,15S,18S,21R)-2-benzyl-21-hydroxy-5-[(4-hydroxyphenyl)methyl]-4,11-dimethyl-15-(2-methylpropyl)-3,6,9,13,16,22-hexaoxo-8-propan-2-yl-10-oxa-1,4,7,14,17-pentazabicyclo[16.3.1]docosan-12-yl]amino]-3-hydroxy-1-oxobutan-2-yl]pyrrolidine-2-carboxamide