ERROR opening https://cactus.nci.nih.gov/chemical/structure/COC1%3DCC%3DC%28C%3DC1%29CNCCC2%3DCC%28%3DC%28C%3DC2OC%29Cl%29OC/file?format=sdf&get3d=True  -- COC1%3DCC%3DC%28C%3DC1%29CNCCC2%3DCC%28%3DC%28C%3DC2OC%29Cl%29OC could not be loaded.