Showing structure for (2S,4R,6aR,8R,10S,13bR)-2,3,4,6,6a,9,10,13b-Octahydro-4,8-dihydroxy-6a,12,13,13b-tetramethoxy-2,10-diphenyl-5H,8H-furo[2,3-f:5,4-h']bis[1]benzopyran-5-one