ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN%28C%29CCCN1c2ccccc2Sc2ccc%28Cl%29cc21/file?format=sdf&get3d=True  -- CN%28C%29CCCN1c2ccccc2Sc2ccc%28Cl%29cc21 could not be loaded.