Showing structure for (1r,8s,10r,11s,12s,20r)-20-hydroxy-11,12-dimethyl-5,14-dioxo-6,18-dioxapentacyclo[10.7.1.0⁴,⁸.0⁸,²⁰.0¹⁵,¹⁹]icosa-3,15(19),16-trien-10-yl acetate