Showing structure for (2r,3r,11'r,12'r)-2-(3,4-dihydroxyphenyl)-4,6,8',11'-tetrahydroxy-12'-(4-hydroxyphenyl)-2h-5',13'-dioxaspiro[1-benzofuran-3,3'-tricyclo[7.4.0.0²,⁶]tridecane]-1',6',8'-trien-4'-one