Showing structure for (1s,2s,3r,5s,8s,11s,14r,15s,17s,20s)-3,15-dihydroxy-14-methyl-6-methylidene-10,16,18-trioxahexacyclo[12.5.1.1⁵,⁸.0¹,¹¹.0²,⁸.0¹⁷,²⁰]henicosane-7,9-dione