Showing structure for 9-methoxy-17,17-dimethyl-4,12,18-trioxapentacyclo[11.8.0.0²,¹¹.0⁵,¹⁰.0¹⁴,¹⁹]henicosa-1(13),5(10),6,8,14(19),15,20-heptaen-7-ol