ERROR opening https://cactus.nci.nih.gov/chemical/structure/OCCN1CCN%28CC1%29CCCN4c2ccccc2%5CC%3DC/c3ccccc34/file?format=sdf&get3d=True  -- OCCN1CCN%28CC1%29CCCN4c2ccccc2%5CC%3DC/c3ccccc34 could not be loaded.