(1R,3aS,3bR,7aR,8aS,8bS,8cS,10aS)-1-acetyl-5-chloro-1-hydroxy-8b,10a-dimethyl-2,3,3a,3b,7a,8,8a,8b,8c,9,10,10a-dodecahydrocyclopenta[a]cyclopropa[g]phenanthren-7(1H)-one