Synonyms: Spiro[cyclopentane-1,17'-[17H]cyclopenta[a]phenanthrene],17,24-cyclocholane deriv.;Spiro[cyclopentane-1,17'-[17H]cyclopenta[a]phenanthrene],hexadecahydro-2,10',13'-trimethyl-, [8'R-[8'a,9'b,10'a,13'a,14'b,17'a(R*)]]-; [8'R-[8'a,9'b,10'a,13'a,14'b,17'a(R*)]]-Hexadecahydro-2,10',13'-trimethylspiro[cyclopentane-1,17'-[17H]cyclopenta[a]phenanthrene]