ERROR opening https://cactus.nci.nih.gov/chemical/structure/COc1cc%28CC%28C%29N%28C%29C%29c%28OC%29cc1I/file?format=sdf&get3d=True  -- COc1cc%28CC%28C%29N%28C%29C%29c%28OC%29cc1I could not be loaded.