Showing structure for 3-[(1r,2r,5s,6r,10r,13s,14s)-2-hydroxy-5,10,14-trimethyl-6-[(2s)-2-methyloxiran-2-yl]-3,8-dioxo-14-(3-oxopentyl)-15-oxatetracyclo[8.6.0.0¹,¹³.0⁴,⁹]hexadec-4(9)-en-5-yl]propanoic acid