Showing structure for (1r,10r)-4,15-bis(3-methylbut-2-en-1-yl)-8,17-dioxatetracyclo[8.7.0.0²,⁷.0¹¹,¹⁶]heptadeca-2(7),3,5,11,13,15-hexaene-5,10,14-triol