ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN%28C%29%5BC%40%40H%5D%28CCOc1cccc2ccccc12%29c1ccccc1/file?format=sdf&get3d=True  -- CN%28C%29%5BC%40%40H%5D%28CCOc1cccc2ccccc12%29c1ccccc1 could not be loaded.