ERROR opening https://cactus.nci.nih.gov/chemical/structure/C3CN%28C%29CCN3C%28%3DO%29c%28cc1c2%29nc1ccc2Cl/file?format=sdf&get3d=True  -- C3CN%28C%29CCN3C%28%3DO%29c%28cc1c2%29nc1ccc2Cl could not be loaded.