Synonyms: Pentaleno[2,1-a]phenanthrene,cyclopenta[16,17]pregnane deriv.; Pentaleno[2,1-a]phenanthrene,6b-ethyl-1,2,3,4,4a,4b,5,6,6a,6b,10,10a,10b,11,12,12a-hexadecahydro-4a,6a-dimethyl-,[4aS-(4aa,4bb,6aa,6ba,10ab,10ba)]-; [4aS-(4aa,4bb,6aa,6ba,10ab,10ba)]-6b-Ethyl-1,2,3,4,4a,4b,5,6,6a,6b,10,10a,10b,11,12,12a-hexadecahydro-4a,6a-dimethylpentaleno[2,1-a]phenanthrene