ERROR opening https://cactus.nci.nih.gov/chemical/structure/1S/C3H5Br2Cl/c4-1-3%285%292-6/h3H%2C1-2H2/file?format=sdf&get3d=True  -- 1S/C3H5Br2Cl/c4-1-3%285%292-6/h3H%2C1-2H2 could not be loaded.