Showing structure for (1'r,3s,3'r,3ar,4s,4ar,7'r,7ar,8r,9'r,9ar,10'r,11's)-4a,8,9'-trimethyl-4'-methylidene-2,5,5',14'-tetraoxo-3a,4,7a,8,9,9a-hexahydro-6'-oxaspiro[azuleno[6,5-b]furan-3,13'-tetracyclo[9.2.2.0¹,¹⁰.0³,⁷]pentadecan]-4-yl acetate