Synonyms: 3,5-Cyclo-5a-ergosta-6,8(14),22-triene (6CI);3,5-Cycloergosta-6,8(14),22-triene, (3b,5a,22E)-; 3a,5-Cyclo-5a-ergosta-6,8(14),22-triene(7CI,8CI); Cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalene,3,5-cycloergosta-6,8(14),22-triene deriv.; NSC 22245