Showing structure for 15-(acetyloxy)-10-hydroxy-5-(methoxycarbonyl)-5,9-dimethyl-2-[(3-methylbutanoyl)oxy]-14-methylidenetetracyclo[11.2.1.0¹,¹⁰.0⁴,⁹]hexadecan-8-yl 2,3-dimethyloxirane-2-carboxylate