ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%3DCC%3DCC%3DC1OCC%28CNCCN2C%3DC%28C%28%3DO%29NC2%3DO%29C%29O/file?format=sdf&get3d=True -- CC1%3DCC%3DCC%3DC1OCC%28CNCCN2C%3DC%28C%28%3DO%29NC2%3DO%29C%29O could not be loaded.