Showing structure for (1r,2s,6r,10s,11r,13s,15r)-8-[(acetyloxy)methyl]-1,6-dihydroxy-4,12,12,15-tetramethyl-5-oxotetracyclo[8.5.0.0²,⁶.0¹¹,¹³]pentadeca-3,8-dien-13-yl (2z)-2-methylbut-2-enoate