Showing structure for (1r,2s,5s,9r,10r,11s,12s,13s,16s)-5,9,12-trihydroxy-2,6,10,16-tetramethyl-14-oxatetracyclo[11.2.1.0²,¹¹.0⁵,¹⁰]hexadec-6-ene-3,8,15-trione