ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCC%20%28%3DO%29%20N%20%28C1CCN%20%28CCc2ccccc2%29%20CC1%29%20c1ccccc1/file?format=sdf&get3d=True  -- CCC%20%28%3DO%29%20N%20%28C1CCN%20%28CCc2ccccc2%29%20CC1%29%20c1ccccc1 could not be loaded.