ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1/C5H10Br2/c6-4-2-1-3-5-7/h1-5H2/file?format=sdf&get3d=True  -- InChI=1/C5H10Br2/c6-4-2-1-3-5-7/h1-5H2 could not be loaded.