The molecule is a quassinoid consisting of a heteropentacyclic skeleton containing a delta-lactone moiety which is substituted at the alpha-carbon by a 3-methylbutanoyloxy group. It has a role as a metabolite and an antineoplastic agent. It is a delta-lactone, a cyclic ether, an enoate ester, an enone, an organic heteropentacyclic compound, a quassinoid, a triol, a methyl ester and a secondary alpha-hydroxy ketone.
methyl (1R,2S,3R,6R,8S,12S,13S,14R,15R,16S,17S)-12,15,16-trihydroxy-9,13-dimethyl-3-(3-methylbutanoyloxy)-4,11-dioxo-5,18-dioxapentacyclo[12.5.0.01,6.02,17.08,13]nonadec-9-ene-17-carboxylate