Showing structure for (1s,13s,15r)-6,8-dihydroxy-17,17-dimethyl-5,15-bis(3-methylbut-2-en-1-yl)-3,16-dioxapentacyclo[11.4.1.0²,¹¹.0²,¹⁵.0⁴,⁹]octadeca-4(9),5,7,11-tetraene-10,14-dione