IUPAC:(1'S,2S,4R,4'R,6'R,10'S,12'R,16'R)-1'-hydroxy-4,4',6',12',17',17'-hexamethyl-9',18',24'-trioxaspiro[oxolane-2,8'-pentacyclo[19.2.1.0^{4,12}.0^{5,10}.0^{16,22}]tetracosane]-20',22'-diene-5,19'-dione
IUPAC:(1'S,2S,4R,4'R,6'R,10'S,12'R,16'R)-1'-hydroxy-4,4',6',12',17',17'-hexamethyl-9',18',24'-trioxaspiro[oxolane-2,8'-pentacyclo[19.2.1.0^{4,12}.0^{5,10}.0^{16,22}]tetracosane]-20',22'-diene-5,19'-dione