ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H5NO2/c1-5-6(7-4-8)2-3-9-5/h2-3H,1H3/file?format=sdf&get3d=True  -- InChI=1S/C6H5NO2/c1-5-6(7-4-8)2-3-9-5/h2-3H,1H3 could not be loaded.