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