Showing structure for (2z)-4-[(1s,2s,8s,17s,19r)-12-hydroxy-17-methoxy-8,21,21-trimethyl-5-(3-methylbut-2-en-1-yl)-8-(4-methylpent-3-en-1-yl)-14,18-dioxo-3,7,20-trioxahexacyclo[15.4.1.0²,¹⁵.0²,¹⁹.0⁴,¹³.0⁶,¹¹]docosa-4,6(11),9,12,15-pentaen-19-yl]-2-methylbut-2-enoic acid