ERROR opening https://cactus.nci.nih.gov/chemical/structure/%5BI-%5D.COc1c%28OC%29c%28O%29c2c%28c1%29CC%5BN%2B%5D%28C%29%28C%29C2/file?format=sdf&get3d=True  -- %5BI-%5D.COc1c%28OC%29c%28O%29c2c%28c1%29CC%5BN%2B%5D%28C%29%28C%29C2 could not be loaded.