Synonyms: Cyclopenta[1,2]phenanthro[8a,9-d]thiazole,5'H-pregnano[5,6-d]thiazole deriv.; Cyclopenta[1,2]phenanthro[8a,9-d]thiazole,11-ethyl-1,2,3,4,7a,8,8a,8b,9,10,11,11a,12,13,13a,13b-hexadecahydro-11a,13b-dimethyl-,[8aS-(8aa,8bb,11a,11aa,13ab,13ba)]-; [8aS-(8aa,8bb,11a,11aa,13ab,13ba)]-11-Ethyl-1,2,3,4,7a,8,8a,8b,9,10,11,11a,12,13,13a,13b-hexadecahydro-11a,13b-dimethylcyclopenta[1,2]phenanthro[8a,9-d]thiazole