Showing structure for (1s,2s,13r,15s)-8-hydroxy-13-methoxy-17,17-dimethyl-15-(3-methylbut-2-en-1-yl)-3,16-dioxapentacyclo[11.4.1.0²,¹¹.0²,¹⁵.0⁴,⁹]octadeca-4,6,8,11-tetraene-10,14-dione