ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C3H4BrN3.ClH/c1-2-3(4)6-7-5-2/file?format=sdf&get3d=True  -- InChI=1S/C3H4BrN3.ClH/c1-2-3(4)6-7-5-2 could not be loaded.