ERROR opening https://cactus.nci.nih.gov/chemical/structure/N1%28c2c%28CCc3c1cccc3%29cccc2%29C%5BC%40%40H%5D%28CN%28C%29C%29C/file?format=sdf&get3d=True  -- N1%28c2c%28CCc3c1cccc3%29cccc2%29C%5BC%40%40H%5D%28CN%28C%29C%29C could not be loaded.