Showing structure for (2e)-4-[(1s,2s,17s,19r)-12-hydroxy-5-[(2r)-2-hydroxy-3-methylbut-3-en-1-yl]-8,8,21,21-tetramethyl-14,18-dioxo-3,7,20-trioxahexacyclo[15.4.1.0²,¹⁵.0²,¹⁹.0⁴,¹³.0⁶,¹¹]docosa-4(13),5,9,11,15-pentaen-19-yl]-2-methylbut-2-enoic acid