ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C%29%28C%29OC%28%3DO%29N1CCC%28CC1%29OCc2nc%28no2%29-c3ccncc3/file?format=sdf&get3d=True  -- CC%28C%29%28C%29OC%28%3DO%29N1CCC%28CC1%29OCc2nc%28no2%29-c3ccncc3 could not be loaded.