Synonyms: Pentaleno[2,1-a]phenanthrene,16,23-cyclolanostane deriv.; Pentaleno[2,1-a]phenanthrene,eicosahydro-1,1,4a,6a,7,10a-hexamethyl-9-(2-methylpropyl)-, [4aR-(4aa,4bb,6aa,6bb,7b,10ab,10ba,12ab)]-; [4aR-(4aa,4bb,6aa,6bb,7b,10ab,10ba,12ab)]-Eicosahydro-1,1,4a,6a,7,10a-hexamethyl-9-(2-methylpropyl)pentaleno[2,1-a]phenanthrene