ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI%3DInChI%3D1S/CH2F2/c2-1-3/h1H2/file?format=sdf&get3d=True  -- InChI%3DInChI%3D1S/CH2F2/c2-1-3/h1H2 could not be loaded.