ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C8H7N/c1-2-4-8-7(3-1)5-6-9-8/h1-6,9H/file?format=sdf&get3d=True  -- InChI=1S/C8H7N/c1-2-4-8-7(3-1)5-6-9-8/h1-6,9H could not be loaded.