7-(2-hydroxypropan-2-yl)-1,4a-dimethyl-1,2,3,4,4a,4b,5,6,10,10a-decahydrophenanthrene-1-carboxylic acid belongs to the class of organic compounds known as diterpenoids. These are terpene compounds formed by four isoprene units. 7-(2-hydroxypropan-2-yl)-1,4a-dimethyl-1,2,3,4,4a,4b,5,6,10,10a-decahydrophenanthrene-1-carboxylic acid is an extremely weak basic (essentially neutral) compound (based on its pKa).