ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/C7H7.Na/c1-7-5-3-2-4-6-7%3B/h2-6H%2C1H2%3B/q-1%3B%2B1/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/C7H7.Na/c1-7-5-3-2-4-6-7%3B/h2-6H%2C1H2%3B/q-1%3B%2B1 could not be loaded.