ERROR opening https://cactus.nci.nih.gov/chemical/structure/C2CCCN2CC%28c%28ccc3%29cc3OCC%28O%29%3DO%29N%28C%29C%28%3DO%29Cc%28cc1Cl%29ccc1Cl/file?format=sdf&get3d=True  -- C2CCCN2CC%28c%28ccc3%29cc3OCC%28O%29%3DO%29N%28C%29C%28%3DO%29Cc%28cc1Cl%29ccc1Cl could not be loaded.