IUPAC:(1'R,2S,3S,7'R,17'R)-7'-hydroxy-3,7'-dimethyl-6'-methylidene-2',9'-dioxa-14'-azaspiro[oxirane-2,4'-tricyclo[9.5.1.0^{14,17}]heptadecan]-11'-ene-3',8'-dione
IUPAC:(1'R,2S,3S,7'R,17'R)-7'-hydroxy-3,7'-dimethyl-6'-methylidene-2',9'-dioxa-14'-azaspiro[oxirane-2,4'-tricyclo[9.5.1.0^{14,17}]heptadecan]-11'-ene-3',8'-dione