Showing structure for (1r,2s,5s,8r,9r,10s,11r,12r,18r)-9,10,18-trihydroxy-12-(hydroxymethyl)-12-methyl-6-methylidene-17-oxapentacyclo[7.6.2.1⁵,⁸.0¹,¹¹.0²,⁸]octadecan-7-one