ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C6H5NO2/c8-7(9)6-4-2-1-3-5-6/h1-5H/file?format=sdf&get3d=True  -- InChI=1S/C6H5NO2/c8-7(9)6-4-2-1-3-5-6/h1-5H could not be loaded.