ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%28C%29C2CCC13CS%28%3DO%29%28%3DO%29N1OC13C2/file?format=sdf&get3d=True  -- CC1%28C%29C2CCC13CS%28%3DO%29%28%3DO%29N1OC13C2 could not be loaded.