ERROR opening https://cactus.nci.nih.gov/chemical/structure/CNCCCN1C2%3DCC%3DCC%3DC2CCC3%3DC1C%3DC%28C%3DC3%29Cl/file?format=sdf&get3d=True  -- CNCCCN1C2%3DCC%3DCC%3DC2CCC3%3DC1C%3DC%28C%3DC3%29Cl could not be loaded.