ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%3D%5BC-%5DC%28C%28%3DC1C%29C%29%28C%29C.Cl%5BRu%5DCl/file?format=sdf&get3d=True  -- CC1%3D%5BC-%5DC%28C%28%3DC1C%29C%29%28C%29C.Cl%5BRu%5DCl could not be loaded.