ERROR opening https://cactus.nci.nih.gov/chemical/structure/Clc3cccc%28C%5C2%3DN%5CN%3DC%28/Cc1c/2cc%28OC%29c%28OC%29c1%29C%29c3/file?format=sdf&get3d=True  -- Clc3cccc%28C%5C2%3DN%5CN%3DC%28/Cc1c/2cc%28OC%29c%28OC%29c1%29C%29c3 could not be loaded.