Showing structure for 13-hydroxy-6-(2-hydroxypropan-2-yl)-16,17-dimethoxy-2,7,20-trioxapentacyclo[11.8.0.0³,¹¹.0⁴,⁸.0¹⁴,¹⁹]henicosa-3,8,10,14(19),15,17-hexaen-12-one