ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCC1%3DC%28C%28%3DCC%3DC1%29CC%29N%28COC%29C%28%3DO%29CCl/file?format=sdf&get3d=True -- CCC1%3DC%28C%28%3DCC%3DC1%29CC%29N%28COC%29C%28%3DO%29CCl could not be loaded.