ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C13H6Cl6O2/c14-6-2-8%2816%2912%2820%294%2810%286%2918%291-5-11%2819%297%2815%293-9%2817%2913%285%2921/h2-3%2C20-21H%2C1H2/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C13H6Cl6O2/c14-6-2-8%2816%2912%2820%294%2810%286%2918%291-5-11%2819%297%2815%293-9%2817%2913%285%2921/h2-3%2C20-21H%2C1H2 could not be loaded.