ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1/C3H2F4/c4-2-1-3(5,6)7/h1-2H/b2-1+/file?format=sdf&get3d=True  -- InChI=1/C3H2F4/c4-2-1-3(5,6)7/h1-2H/b2-1+ could not be loaded.