Showing structure for (8r,9s,10r,11r)-11-(acetyloxy)-14-hydroxy-3,4,5,15,16-pentamethoxy-9,10-dimethyltricyclo[10.4.0.0²,⁷]hexadeca-1(12),2,4,6,13,15-hexaen-8-yl (2z)-2-methylbut-2-enoate