Synonyms: 4H-Cyclopenta[7,8]phenanthro[2,1-d]thiazole,pregn-3-eno[3,4-d]thiazole deriv.; 4H-Cyclopenta[7,8]phenanthro[2,1-d]thiazole,8-ethyl-5,5a,5b,6,7,7a,8,9,10,10a,10b,11,12,12a-tetradecahydro-5a,7a-dimethyl-,[5aR-(5aa,5bb,7aa,8a,10ab,10ba)]-; [5aR-(5aa,5bb,7aa,8a,10ab,10ba)]-8-Ethyl-5,5a,5b,6,7,7a,8,9,10,10a,10b,11,12,12a-tetradecahydro-5a,7a-dimethyl-4H-cyclopenta[7,8]phenanthro[2,1-d]thiazole