Synonyms: Spiro[cyclohexane-1,17'-[17H]cyclopenta[a]phenanthrene],spiro[cyclohexane-1,17'-estrane] deriv.; Spiro[cyclohexane-1,17'-[17H]cyclopenta[a]phenanthrene],hexadecahydro-13'-methyl-, [8'R-(8'a,9'b,10'a,13'a,14'b)]-; [8'R-(8'a,9'b,10'a,13'a,14'b)]-Hexadecahydro-13'-methylspiro[cyclohexane-1,17'-[17H]cyclopenta[a]phenanthrene]