Showing structure for (2e)-4-[(1r,2r,7s,14s,15s,16s,18s)-11,15-dihydroxy-16-methoxy-6,6,7,20,20-pentamethyl-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-trien-18-yl]-2-methylbut-2-enal