IUPAC:5',13',25'-trimethyl-11',17',22'-trioxo-2',10',16',23'-tetraoxaspiro[oxirane-2,26'-tetracyclo[22.2.1.0^{3,8}.0^{8,25}]heptacosane]-4',12',18',20'-tetraen-6'-yl acetate
IUPAC:5',13',25'-trimethyl-11',17',22'-trioxo-2',10',16',23'-tetraoxaspiro[oxirane-2,26'-tetracyclo[22.2.1.0^{3,8}.0^{8,25}]heptacosane]-4',12',18',20'-tetraen-6'-yl acetate