Showing structure for 8-[(acetyloxy)methyl]-1-hydroxy-4,12,12,15-tetramethyl-13-[(2-methylpropanoyl)oxy]-5-oxotetracyclo[8.5.0.0²,⁶.0¹¹,¹³]pentadeca-3,8-dien-14-yl octa-2,4-dienoate