ERROR opening https://cactus.nci.nih.gov/chemical/structure/C%3DCCN1CCC23C4C%28%3DNN%29CCC2%28C1CC5%3DC3C%28%3DC%28C%3DC5%29O%29O4%29O/file?format=sdf&get3d=True -- C%3DCCN1CCC23C4C%28%3DNN%29CCC2%28C1CC5%3DC3C%28%3DC%28C%3DC5%29O%29O4%29O could not be loaded.