ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C%29Oc2ccccc2CN%28C%28%3DO%29C%29c1ccc%28Cl%29cc1Oc3ccccc3/file?format=sdf&get3d=True  -- CC%28C%29Oc2ccccc2CN%28C%28%3DO%29C%29c1ccc%28Cl%29cc1Oc3ccccc3 could not be loaded.