Showing structure for 14-(acetyloxy)-2,5,10,11-tetrahydroxy-6,9,13-trimethyl-12-oxo-7,17-dioxapentacyclo[11.6.0.0³,⁹.0⁶,¹⁰.0¹⁶,¹⁹]nonadecan-19-yl acetate