Showing structure for 2,15-dihydroxy-17-[1-hydroxy-1-(4-methyl-5-oxooxolan-2-yl)propan-2-yl]-9,9,18-trimethyl-4,8,21-trioxahexacyclo[13.5.1.0¹,¹³.0³,⁷.0³,¹⁰.0¹⁶,¹⁸]henicosane-5,14-dione