IUPAC:(1'R,2R,4'S,5S,6R,8'R,10'Z,13'R,14'Z,16'Z,20'R,24'S)-6-ethyl-24'-hydroxy-21'-(hydroxyimino)-5,11',13',22'-tetramethyl-3',7',19'-trioxaspiro[oxane-2,6'-tetracyclo[15.6.1.1^{4,8}.0^{20,24}]pentacosane]-10',14',16',22'-tetraen-2'-one
IUPAC:(1'R,2R,4'S,5S,6R,8'R,10'Z,13'R,14'Z,16'Z,20'R,24'S)-6-ethyl-24'-hydroxy-21'-(hydroxyimino)-5,11',13',22'-tetramethyl-3',7',19'-trioxaspiro[oxane-2,6'-tetracyclo[15.6.1.1^{4,8}.0^{20,24}]pentacosane]-10',14',16',22'-tetraen-2'-one