ERROR opening https://cactus.nci.nih.gov/chemical/structure/N.N.N.N.N.N.Cl%26%2391%3BNi%26%2393%3BCl/file?format=sdf&get3d=True  -- N.N.N.N.N.N.Cl%26%2391%3BNi%26%2393%3BCl could not be loaded.