Showing structure for (1r,2s,4s,6r,8r,9r,10r,11r,13r,15s)-8-(acetyloxy)-2,6,15-trihydroxy-5,5,9-trimethyl-14-methylidene-3-oxotetracyclo[11.2.1.0¹,¹⁰.0⁴,⁹]hexadecan-11-yl acetate