ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C3Cl3N3/c4-1-7-2(5)9-3(6)8-1/file?format=sdf&get3d=True  -- InChI=1S/C3Cl3N3/c4-1-7-2(5)9-3(6)8-1 could not be loaded.