Showing structure for (1r,2s,4s,5r,6s,10r,15s,16r,18r)-1,5,15-trihydroxy-8-methyl-2,15-bis(3-methylbut-2-en-1-yl)-18-(3-methylbut-3-en-1-yn-1-yl)-3,17-dioxapentacyclo[8.7.1.0²,⁴.0⁶,¹⁸.0¹¹,¹⁶]octadeca-8,11-dien-13-one