ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C20H18O6/c1-3-15-17%2825-9-23-15%295-11%281%2919-13-7-22-20%2814%2813%298-21-19%2912-2-4-16-18%286-12%2926-10-24-16/h1-6%2C13-14%2C19-20H%2C7-10H2/t13-%2C14-%2C19%20%2C20%20/m0/s1/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C20H18O6/c1-3-15-17%2825-9-23-15%295-11%281%2919-13-7-22-20%2814%2813%298-21-19%2912-2-4-16-18%286-12%2926-10-24-16/h1-6%2C13-14%2C19-20H%2C7-10H2/t13-%2C14-%2C19%20%2C20%20/m0/s1 could not be loaded.