ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C%29c1c%28cc%28cc1O%29/C%3DC/c2ccccc2%29O/file?format=sdf&get3d=True  -- CC%28C%29c1c%28cc%28cc1O%29/C%3DC/c2ccccc2%29O could not be loaded.