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