ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%3DC%28/C%3DC/C%29N%28c1ccccc1%29C3CCN%28CCc2ccccc2%29CC3/file?format=sdf&get3d=True  -- O%3DC%28/C%3DC/C%29N%28c1ccccc1%29C3CCN%28CCc2ccccc2%29CC3 could not be loaded.