Showing structure for (1s,1'r,2s,3's,5r,5's,6's,7's,8's,9's)-5',6',7',8'-tetramethyl-3-oxo-2',4,6-trioxaspiro[bicyclo[3.1.0]hexane-2,4'-tricyclo[4.2.1.0³,⁷]nonan]-9'-yl acetate