Synonyms: 6,14-Etheno-8-selenamorphinan;2,4a-Etheno-5,10b-(iminoethano)-1H-naphtho[2,1-b]selenin, 2,3,5,6-tetrahydro-,[2S-(2a,4aa,5b,10bb)]-;8-Selena-6,14-ethenomorphinan; [2S-(2a,4aa,5b,10bb)]-2,3,5,6-Tetrahydro-2,4a-etheno-5,10b-(iminoethano)-1H-naphtho[2,1-b]selenin