ERROR opening https://cactus.nci.nih.gov/chemical/structure/OC%28CNC%28C%29%28C%29C%29COc2cccc1c2SCCC1O/file?format=sdf&get3d=True -- OC%28CNC%28C%29%28C%29C%29COc2cccc1c2SCCC1O could not be loaded.