9b-methyl-3aβ,3bα,5aα,9aα,9bβ,11aβ-perhydrophenanthro<2,1-b>furan-7-one

9bβ-methyl-2,3,3aβ,3bα,4,5,7,8,9,9aα,9bα,10,11,11aβ-tetradecahydrophenanthro<2,1-b>furan-7-one

((1S,4aS)-7-Methoxy-4a-methyl-2-oxo-1,2,3,4,4a,9,10,10a-octahydro-phenanthren-1-yl)-acetic acid methyl ester