ERROR opening https://cactus.nci.nih.gov/chemical/structure/C%5BTi%5D%28C%29%28C%29c.c1cccc1.c2cccc2/file?format=sdf&get3d=True  -- C%5BTi%5D%28C%29%28C%29c.c1cccc1.c2cccc2 could not be loaded.