Showing structure for (1r,4s,5r,7s,10s,11r,12r,13s,14s,18s,20r)-7,11,14,20-tetrahydroxy-4,13,17-trimethyl-3,9-dioxapentacyclo[10.8.0.0¹,⁵.0⁴,¹⁰.0¹³,¹⁸]icos-16-ene-8,15-dione