(2S,4aR,4bS,6aS,7aS,8aS,8bS,8cR,8dR,9aR,9bR)-2,9b-dihydroxy-4a,6a-dimethylhexadecahydro-1H-cyclopropa[4,5]cyclopenta[1,2-a]cyclopropa[l]phenanthren-7(7aH)-one