ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1C%28CC%28N1%29C2CC2%29c3ccc%28cc3%29Cl/file?format=sdf&get3d=True  -- CC1C%28CC%28N1%29C2CC2%29c3ccc%28cc3%29Cl could not be loaded.