ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%26%2361%3B1S/CF4/c2-1%283%2C4%295/file?format=sdf&get3d=True  -- InChI%3DInChI%26%2361%3B1S/CF4/c2-1%283%2C4%295 could not be loaded.