ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C4F8/c5-2(6)1(3(7,8)9)4(10,11)12/file?format=sdf&get3d=True  -- InChI=1S/C4F8/c5-2(6)1(3(7,8)9)4(10,11)12 could not be loaded.