ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C7H9N/c1-6-4-3-5-7%282%298-6/h3-5H%2C1-2H3/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C7H9N/c1-6-4-3-5-7%282%298-6/h3-5H%2C1-2H3 could not be loaded.