Showing structure for 5-ethenyl-15-hydroxy-3,17-dimethoxy-12-[(2s,3s,4r,5s,6r)-3,4,5-trihydroxy-4,6-dimethyloxan-2-yl]-9-oxatetracyclo[8.8.0.0²,⁷.0¹¹,¹⁶]octadeca-1(10),2(7),3,5,11(16),12,14,17-octaen-8-one