ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%28c1cccc%28c1C%29C%29%5BC%40H%5D2CCNC%5BC%40H%5D2O/file?format=sdf&get3d=True -- O%28c1cccc%28c1C%29C%29%5BC%40H%5D2CCNC%5BC%40H%5D2O could not be loaded.