Showing structure for (8's,12r)-4,8'-dihydroxy-2,4',7',10-tetraoxaspiro[tricyclo[12.2.2.1³,⁷]nonadecane-12,3'-tricyclo[7.3.0.0²,⁶]dodecan]-1(16),1'(9'),2'(6'),3(19),4,6,14,17-octaene-5',10',11-trione