ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C12H26/c1-11(2)9-7-5-6-8-10-12(3)4/h11-12H,5-10H2,1-4H3/file?format=sdf&get3d=True  -- InChI=1S/C12H26/c1-11(2)9-7-5-6-8-10-12(3)4/h11-12H,5-10H2,1-4H3 could not be loaded.