ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C%29/C%3DC/CCCCC%28NCC1%3DCC%28OC%29%3DC%28O%29C%3DC1%29%3DO/file?format=sdf&get3d=True -- CC%28C%29/C%3DC/CCCCC%28NCC1%3DCC%28OC%29%3DC%28O%29C%3DC1%29%3DO could not be loaded.