Synonyms: isospongiaquinone;2-Hydroxy-3-[[(1R)-1,2β,4aβ,5-tetramethyl-1,2,3,4,4a,7,8,8aα-octahydronaphthalene-1α-yl]methyl]-5-methoxy-1,4-benzoquinone;2-Hydroxy-5-methoxy-3-[[(1R)-1,2,3,4,4a,7,8,8aα-octahydro-1,2β,4aβ,5-tetramethylnaphthalen-1α-yl]methyl]-2,5-cyclohexadiene-1,4-dione