ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN%28C%29CC/C%3DC/1%5Cc2ccccc2CSc3c1cccc3/file?format=sdf&get3d=True  -- CN%28C%29CC/C%3DC/1%5Cc2ccccc2CSc3c1cccc3 could not be loaded.