Synonyms: 2H-Naphth[1',2':6,7]indeno[1,7a-b]azirine,estrano[14,15-b]azirine (9CI); 2H-Naphth[1',2':6,7]indeno[1,7a-b]azirine,1,3b,4,5,5a,6,7,8,9,9a,9b,10,11,11a-tetradecahydro-11a-methyl-, [3bR-(3ba,9aa,9bb,11aa)]-; [3bR-(3ba,9aa,9bb,11aa)]-1,3b,4,5,5a,6,7,8,9,9a,9b,10,11,11a-Tetradecahydro-11a-methyl-2H-naphth[1',2':6,7]indeno[1,7a-b]azirine