Showing structure for (1r,2s,5s,7r,8r,9s,10s,11r,15s,16r,18r)-16-methoxy-12,12-dimethyl-6-methylidene-17-oxapentacyclo[7.6.2.1⁵,⁸.0¹,¹¹.0²,⁸]octadecane-7,9,10,15,18-pentol