ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C4H3ClN2O/c5-3-1-6-4(8)7-2-3/h1-2H,(H,6,7,8)/file?format=sdf&get3d=True  -- InChI=1S/C4H3ClN2O/c5-3-1-6-4(8)7-2-3/h1-2H,(H,6,7,8) could not be loaded.