Showing structure for (3r,4'r,5s,6'r,8's)-5-[(5r)-5-hydroxy-2-oxo-5h-furan-3-yl]-6'-methyl-3'-oxaspiro[oxolane-3,7'-tricyclo[6.3.1.0⁴,¹²]dodecan]-1'(12')-ene-2,2'-dione