Showing structure for 1-[27'-(acetyloxy)-9',15'-dimethyl-3',18'-dioxo-4',12',17',24'-tetraoxaspiro[oxirane-2,14'-pentacyclo[21.3.1.1¹³,¹⁶.0⁶,¹¹.0⁶,¹⁵]octacosane]-1',9',19',21'-tetraen-23'-yl]ethyl acetate