Showing structure for (2e)-4-[11-hydroxy-7-(2-hydroxypropan-2-yl)-20,20-dimethyl-10-(3-methylbut-2-en-1-yl)-13,17-dioxo-3,8,19-trioxahexacyclo[14.4.1.0²,¹⁴.0²,¹⁸.0⁴,¹².0⁵,⁹]henicosa-4(12),5(9),10,14-tetraen-18-yl]-2-methylbut-2-enal