ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%26%2361%3B1S/C4F8/c5-2%286%291%283%287%2C8%299%294%2810%2C11%2912/file?format=sdf&get3d=True  -- InChI%3DInChI%26%2361%3B1S/C4F8/c5-2%286%291%283%287%2C8%299%294%2810%2C11%2912 could not be loaded.