Showing structure for 4-[7-(3,7-dimethylocta-2,6-dien-1-yl)-6,8,12-trihydroxy-17,17-dimethyl-5-(3-methylbut-2-en-1-yl)-10,14-dioxo-3,16-dioxapentacyclo[11.4.1.0²,¹¹.0²,¹⁵.0⁴,⁹]octadeca-4,6,8-trien-15-yl]-2-methylbut-2-enoic acid