Synonyms: Spiro[cyclobutane-1,7'-[7H]cyclopenta[a]phenanthrene],spiro[cholestane-7,1'-cyclobutane] deriv.; Spiro[cyclobutane-1,7'-[7H]cyclopenta[a]phenanthrene],17'-(1,5-dimethylhexyl)hexadecahydro-10',13'-dimethyl-, [8'S-[8'a,9'b,10'a,13'a,14'b,17'a(S*)]]-; [8'S-[8'a,9'b,10'a,13'a,14'b,17'a(S*)]]-17'-(1,5-Dimethylhexyl)hexadecahydro-10',13'-dimethylspiro[cyclobutane-1,7'-[7H]cyclopenta[a]phenanthrene]