Showing structure for (6s,7r,8s,16s,17r,18s)-7,17-diethenyl-8-{[(2r,3s,4r,5r,6s)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-18-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-3,9,13,19-tetraoxatricyclo[14.4.0.0⁶,¹¹]icosa-1(20),10-diene-2,12-dione