ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H4ClNO/c7-6(9)5-2-1-3-8-4-5/h1-4H/file?format=sdf&get3d=True  -- InChI=1S/C6H4ClNO/c7-6(9)5-2-1-3-8-4-5/h1-4H could not be loaded.