Synonyms: 7,20-Cycloatidan-15-ol,16,17-didehydro-21-[2-[[(16x,19S)-21,19-(1,2-ethanediyloxy)-7,20-cycloatidan-17-yl]oxy]ethyl]-, (15b)-;5H,9H-9,11a-Ethano-12,4,7a-ethanylylideneindeno[1,2-g]oxazolo[3,2-a]azocine,7,20-cycloatidan-15-ol deriv.;8,10a-Ethano-11,3,6a-ethanylylidene-8H-indeno[2,1-b]azocine,7,20-cycloatidan-15-ol deriv.; Pukeensine