Showing structure for (1s,2r,4r,8s,9r,12s,13s,16s)-2,8,12-trihydroxy-5,5-dimethyl-18-methylidene-11-oxapentacyclo[11.3.2.0¹,¹².0⁴,⁹.0⁹,¹⁶]octadecan-17-one