ERROR opening https://cactus.nci.nih.gov/chemical/structure/Oc1ccc%28cc1%29C%5C3%3DC%5COc2cc%28O%29cc%28O%29c2C/3%3DO/file?format=sdf&get3d=True  -- Oc1ccc%28cc1%29C%5C3%3DC%5COc2cc%28O%29cc%28O%29c2C/3%3DO could not be loaded.