Showing structure for (1r,2s,3s,5s,8r,9s,10s,11r,18r)-3,9,18-trihydroxy-12,12-dimethyl-6-methylidene-7-oxo-17-oxapentacyclo[7.6.2.1⁵,⁸.0¹,¹¹.0²,⁸]octadecan-10-yl acetate