Showing structure for (1s,4s,6s,8r,9r,12s,13s,16r,17r)-6,9-dihydroxy-7,7,17-trimethyl-3,10-dioxapentacyclo[14.2.1.0¹,¹³.0⁴,¹².0⁸,¹²]nonadecane-2,18-dione