11-Ethyl-15,16-dihydro-17H-cyclopenta(a)phenanthren-17-one 15,16-Dihydro-11-ethylcyclopenta(a)phenanthren-17-one 42028-27-3 BRN 5957597 Cyclopenta(a)phenanthren-17-one, 15,16-dihydro-11-ethyl-