ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C5H4ClN3O2/c6-4-2-1-3(9(10)11)5(7)8-4/h1-2H,(H2,7,8)/file?format=sdf&get3d=True  -- InChI=1S/C5H4ClN3O2/c6-4-2-1-3(9(10)11)5(7)8-4/h1-2H,(H2,7,8) could not be loaded.