5',6'-dihydro-5-hydroxy-9H-benzo[10,9,11]-5α-estrane-3,17-dione cyclic 3-(2,2-dimethyl-1,3-propanediyl acetal)

19,11α-dihydro-5,17α-dihydroxy-3-oxo-6'H-benzo[10,9,11]-5α-estrane-17β-carbonitrile cyclic 2,2-dimethyl-1,3-propanediyl acetal