Showing structure for (1's,2'r,3r,7'r,9'r,10'r)-2,2,2',10',13',14'-hexamethyl-6'-methylidene-6,12',15'-trioxo-8',11'-dioxaspiro[pyran-3,5'-tetracyclo[7.3.3.0¹,⁹.0²,⁷]pentadecan]-13'-ene-7'-carbaldehyde