The molecule is an aprotoxin having the common aprotoxin cyclodepsipeptide skeleton with a double bond in the polyketide unit. It is isolated from Lyngbya bouillonii and exhibits cytotoxic activity against several cancer cell lines derived from colon, cervix, and bone. It has a role as a metabolite and an antineoplastic agent.
(2Z,5S,7S,10S,16S,19S,22S,27S)-16-[(2S)-butan-2-yl]-7-tert-butyl-22-[(4-methoxyphenyl)methyl]-5,17,19,20-tetramethyl-8-oxa-29-thia-14,17,20,23,30-pentazatricyclo[25.2.1.010,14]triaconta-1(30),2-diene-9,15,18,21,24-pentone