IUPAC:(1'Z,2S,6'R,11'R,13'R,16'R,19'Z,23'S,27'R)-23'-acetyl-27'-hydroxy-9',15'-dimethyl-4',12',17',24'-tetraoxaspiro[oxirane-2,14'-pentacyclo[21.3.1.1^{13,16}.0^{6,11}.0^{6,15}]octacosane]-1',9',19'-triene-3',18'-dione
IUPAC:(1'Z,2S,6'R,11'R,13'R,16'R,19'Z,23'S,27'R)-23'-acetyl-27'-hydroxy-9',15'-dimethyl-4',12',17',24'-tetraoxaspiro[oxirane-2,14'-pentacyclo[21.3.1.1^{13,16}.0^{6,11}.0^{6,15}]octacosane]-1',9',19'-triene-3',18'-dione