ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCN%28CC%29CCCN1c2ccccc2Sc3ccc%28Cl%29cc13/file?format=sdf&get3d=True  -- CCN%28CC%29CCCN1c2ccccc2Sc3ccc%28Cl%29cc13 could not be loaded.