The molecule is an organic disulfide isolated from the whole broth of the marine-derived fungus Exserohilum rostratum and has been shown to exhibit antineoplastic activity. It has a role as a metabolite and an antineoplastic agent. It is an organic heterohexacyclic compound, a lactam, a tetrol, an organic disulfide, a bridged compound and a secondary alcohol.
(1R,4S,5S,8S,9S,11R,14S,15S,18S,19S)-5,8,15,18-tetrahydroxy-21,22-dithia-3,13-diazahexacyclo[9.9.2.01,13.03,11.04,9.014,19]docosane-2,12-dione