ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/2FH.Mg/h2%2A1H%3B/q%3B%3B%202/p-2/file?format=sdf&get3d=True -- InChI%3DInChI%3D1S/2FH.Mg/h2%2A1H%3B/q%3B%3B%202/p-2 could not be loaded.