Showing structure for (1r,3r,5r,6s,7s,8s)-6,8-dihydroxy-2',4,4',12-tetraoxaspiro[tetracyclo[5.4.1.0¹,⁷.0³,⁵]dodecane-2,3'-tricyclo[7.3.1.0⁵,¹³]tridecane]-1'(13'),5',7',9,9',11'-hexaen-11-one