The molecule is a sesquiterpenoid that is 1,2,3a,4,5,5a,8,9,9a,9b-decahydronaphtho[2,1-b]furan substituted by methyl groups at positions 1, 9 and 9a and hydroxy groups at positions 2 and 5a. Isolated from methylene chloride solubles of the Formosan soft coral Nephthea elongata, it exhibits cytotoxicity against selected cancer cells. It has a role as an antineoplastic agent and a coral metabolite. It is a cyclic ether, a diol, an organic heterotricyclic compound and a sesquiterpenoid.
(1S,2S,3aS,5aS,9S,9aS,9bR)-1,9,9a-trimethyl-1,2,3a,4,5,8,9,9b-octahydrobenzo[e][1]benzofuran-2,5a-diol