Synonyms: Cyclopenta[7,8]phenanthro[2,1-b]oxete,4'H-androst-3-eno[3,4-b]oxete deriv.; Cyclopenta[7,8]phenanthro[2,1-b]oxete,1,3,4,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-hexadecahydro-4a,6a-dimethyl-,[4aR-(4aa,4bb,6aa,9ab,9ba)]-; [4aR-(4aa,4bb,6aa,9ab,9ba)]-1,3,4,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-Hexadecahydro-4a,6a-dimethylcyclopenta[7,8]phenanthro[2,1-b]oxete